diff --git a/rigs/adat/adat.c b/rigs/adat/adat.c
index fee1993de..89adee3b2 100644
--- a/rigs/adat/adat.c
+++ b/rigs/adat/adat.c
@@ -31,7 +31,6 @@
 #include <stdlib.h>
 #include <string.h>
 #include <unistd.h>
-#include <math.h>
 #include <ctype.h>
 
 // ---------------------------------------------------------------------------
diff --git a/rigs/alinco/alinco.c b/rigs/alinco/alinco.c
index 449acd441..f51d1c86f 100644
--- a/rigs/alinco/alinco.c
+++ b/rigs/alinco/alinco.c
@@ -25,7 +25,6 @@
 #include <stdlib.h>
 #include <string.h>  /* String function definitions */
 #include <unistd.h>  /* UNIX standard function definitions */
-#include <math.h>
 
 #include <hamlib/rig.h>
 #include <register.h>
diff --git a/rigs/alinco/dx77.c b/rigs/alinco/dx77.c
index 8f14ee497..55d336c7e 100644
--- a/rigs/alinco/dx77.c
+++ b/rigs/alinco/dx77.c
@@ -25,8 +25,6 @@
 #include <stdlib.h>
 #include <string.h>  /* String function definitions */
 #include <unistd.h>  /* UNIX standard function definitions */
-#include <math.h>
-
 
 #include <hamlib/rig.h>
 #include "idx_builtin.h"
diff --git a/rigs/aor/aor.c b/rigs/aor/aor.c
index 9776558c9..f7799b364 100644
--- a/rigs/aor/aor.c
+++ b/rigs/aor/aor.c
@@ -25,7 +25,6 @@
 #include <stdlib.h>
 #include <string.h>  /* String function definitions */
 #include <unistd.h>  /* UNIX standard function definitions */
-#include <math.h>
 #include <ctype.h>
 
 #include "hamlib/rig.h"
diff --git a/rigs/aor/ar7030.c b/rigs/aor/ar7030.c
index 7f664049c..214b7c1d2 100644
--- a/rigs/aor/ar7030.c
+++ b/rigs/aor/ar7030.c
@@ -28,7 +28,6 @@
 
 #include <stdio.h>
 #include <string.h>
-#include <math.h>
 
 #include <hamlib/rig.h>
 #include "aor.h"
diff --git a/rigs/aor/ar7030p.c b/rigs/aor/ar7030p.c
index 97cb94480..39d0fc0e2 100644
--- a/rigs/aor/ar7030p.c
+++ b/rigs/aor/ar7030p.c
@@ -28,7 +28,6 @@
 
 #include <stdio.h>
 #include <string.h>
-#include <math.h>
 #include <assert.h>
 #include <stdlib.h>
 
diff --git a/rigs/barrett/4050.c b/rigs/barrett/4050.c
index 5564b6d9c..426a37c57 100644
--- a/rigs/barrett/4050.c
+++ b/rigs/barrett/4050.c
@@ -24,7 +24,6 @@
 #include <stdlib.h>
 #include <string.h>
 #include <unistd.h>
-#include <math.h>
 
 #include <hamlib/rig.h>
 #include "serial.h"
diff --git a/rigs/barrett/950.c b/rigs/barrett/950.c
index 4c968c824..03bb3500c 100644
--- a/rigs/barrett/950.c
+++ b/rigs/barrett/950.c
@@ -24,7 +24,6 @@
 #include <stdlib.h>
 #include <string.h>
 #include <unistd.h>
-#include <math.h>
 
 #include <hamlib/rig.h>
 #include "serial.h"
diff --git a/rigs/barrett/barrett.c b/rigs/barrett/barrett.c
index 3e212358d..507b7b250 100644
--- a/rigs/barrett/barrett.c
+++ b/rigs/barrett/barrett.c
@@ -24,7 +24,6 @@
 #include <stdlib.h>
 #include <string.h>
 #include <unistd.h>
-#include <math.h>
 
 #include <hamlib/rig.h>
 #include "serial.h"
diff --git a/rigs/codan/codan.c b/rigs/codan/codan.c
index 9c0ed6c81..db380ca86 100644
--- a/rigs/codan/codan.c
+++ b/rigs/codan/codan.c
@@ -24,7 +24,6 @@
 #include <stdlib.h>
 #include <string.h>
 #include <unistd.h>
-#include <math.h>
 
 #include <hamlib/rig.h>
 #include "serial.h"
diff --git a/rigs/drake/drake.c b/rigs/drake/drake.c
index 593876433..2beb71cc0 100644
--- a/rigs/drake/drake.c
+++ b/rigs/drake/drake.c
@@ -25,7 +25,6 @@
 #include <stdlib.h>
 #include <string.h>  /* String function definitions */
 #include <unistd.h>  /* UNIX standard function definitions */
-#include <math.h>
 
 #include "hamlib/rig.h"
 #include "serial.h"
diff --git a/rigs/dummy/amp_dummy.c b/rigs/dummy/amp_dummy.c
index 92357e538..60d2db3e8 100644
--- a/rigs/dummy/amp_dummy.c
+++ b/rigs/dummy/amp_dummy.c
@@ -24,7 +24,6 @@
 #include <stdlib.h>
 #include <string.h>  /* String function definitions */
 #include <unistd.h>  /* UNIX standard function definitions */
-#include <math.h>
 
 #include "hamlib/amplifier.h"
 #include "serial.h"
diff --git a/rigs/dummy/dummy.c b/rigs/dummy/dummy.c
index 268fa72b7..5624e54ef 100644
--- a/rigs/dummy/dummy.c
+++ b/rigs/dummy/dummy.c
@@ -30,8 +30,6 @@
 // cppcheck-suppress *
 #include <unistd.h>  /* UNIX standard function definitions */
 // cppcheck-suppress *
-#include <math.h>
-// cppcheck-suppress *
 #include <time.h>
 
 #include "hamlib/rig.h"
diff --git a/rigs/dummy/flrig.c b/rigs/dummy/flrig.c
index 265d8d8fc..d3caf59ed 100644
--- a/rigs/dummy/flrig.c
+++ b/rigs/dummy/flrig.c
@@ -25,7 +25,6 @@
 #include <stdlib.h>
 #include <string.h>             /* String function definitions */
 #include <unistd.h>             /* UNIX standard function definitions */
-#include <math.h>
 
 #include <hamlib/rig.h>
 #include <serial.h>
diff --git a/rigs/dummy/netampctl.c b/rigs/dummy/netampctl.c
index 35f6afc16..7becc133e 100644
--- a/rigs/dummy/netampctl.c
+++ b/rigs/dummy/netampctl.c
@@ -24,7 +24,6 @@
 #include <stdlib.h>
 #include <string.h>  /* String function definitions */
 #include <unistd.h>  /* UNIX standard function definitions */
-#include <math.h>
 #include <errno.h>
 
 #include "hamlib/amplifier.h"
diff --git a/rigs/dummy/netrigctl.c b/rigs/dummy/netrigctl.c
index aa24ce7fb..09114f700 100644
--- a/rigs/dummy/netrigctl.c
+++ b/rigs/dummy/netrigctl.c
@@ -25,7 +25,6 @@
 #include <stdlib.h>
 #include <string.h>  /* String function definitions */
 #include <unistd.h>  /* UNIX standard function definitions */
-#include <math.h>
 #include <errno.h>
 
 #include "hamlib/rig.h"
diff --git a/rigs/dummy/netrotctl.c b/rigs/dummy/netrotctl.c
index cbe093b0f..c1ec31eda 100644
--- a/rigs/dummy/netrotctl.c
+++ b/rigs/dummy/netrotctl.c
@@ -24,7 +24,6 @@
 #include <stdlib.h>
 #include <string.h>  /* String function definitions */
 #include <unistd.h>  /* UNIX standard function definitions */
-#include <math.h>
 #include <errno.h>
 
 #include "hamlib/rotator.h"
diff --git a/rigs/dummy/tci1x.c b/rigs/dummy/tci1x.c
index 4307805c7..2a7f03615 100644
--- a/rigs/dummy/tci1x.c
+++ b/rigs/dummy/tci1x.c
@@ -24,7 +24,6 @@
 #include <stdlib.h>
 #include <string.h>             /* String function definitions */
 #include <unistd.h>             /* UNIX standard function definitions */
-#include <math.h>
 
 #include <hamlib/rig.h>
 #include <serial.h>
diff --git a/rigs/dummy/trxmanager.c b/rigs/dummy/trxmanager.c
index c52c84fd9..1d24e6b59 100644
--- a/rigs/dummy/trxmanager.c
+++ b/rigs/dummy/trxmanager.c
@@ -25,7 +25,6 @@
 #include <stdlib.h>
 #include <string.h>             /* String function definitions */
 #include <unistd.h>             /* UNIX standard function definitions */
-#include <math.h>
 
 #include <hamlib/rig.h>
 #include <serial.h>
diff --git a/rigs/flexradio/flexradio.c b/rigs/flexradio/flexradio.c
index d4dd1bf22..760429828 100644
--- a/rigs/flexradio/flexradio.c
+++ b/rigs/flexradio/flexradio.c
@@ -24,7 +24,6 @@
 #include <stdlib.h>
 #include <string.h>  /* String function definitions */
 #include <unistd.h>  /* UNIX standard function definitions */
-#include <math.h>
 
 #include "hamlib/rig.h"
 #include "flexradio.h"
diff --git a/rigs/gomspace/gs100.c b/rigs/gomspace/gs100.c
index 06913ff0d..213650636 100644
--- a/rigs/gomspace/gs100.c
+++ b/rigs/gomspace/gs100.c
@@ -30,7 +30,6 @@
 #include <stdlib.h>
 #include <string.h>
 #include <unistd.h>
-#include <math.h>
 #include <assert.h>
 
 #include "hamlib/rig.h"
diff --git a/rigs/icmarine/icm710.c b/rigs/icmarine/icm710.c
index f1fbc1c6e..c356373f0 100644
--- a/rigs/icmarine/icm710.c
+++ b/rigs/icmarine/icm710.c
@@ -25,7 +25,6 @@
 #include <stdlib.h>
 #include <string.h>
 #include <unistd.h>
-#include <math.h>
 
 #include <hamlib/rig.h>
 #include <serial.h>
diff --git a/rigs/icmarine/icmarine.c b/rigs/icmarine/icmarine.c
index 29348513c..55113956e 100644
--- a/rigs/icmarine/icmarine.c
+++ b/rigs/icmarine/icmarine.c
@@ -24,7 +24,6 @@
 #include <stdlib.h>
 #include <string.h>  /* String function definitions */
 #include <unistd.h>  /* UNIX standard function definitions */
-#include <math.h>
 
 #include <hamlib/rig.h>
 #include <serial.h>
diff --git a/rigs/icom/optoscan.c b/rigs/icom/optoscan.c
index a955b84b1..4351dbd1d 100644
--- a/rigs/icom/optoscan.c
+++ b/rigs/icom/optoscan.c
@@ -24,7 +24,6 @@
 #include <stdlib.h>
 #include <string.h>  /* String function definitions */
 #include <unistd.h>  /* UNIX standard function definitions */
-#include <math.h>
 
 #include "hamlib/rig.h"
 #include "serial.h"
diff --git a/rigs/kachina/kachina.c b/rigs/kachina/kachina.c
index 0c59d94ea..d75666c21 100644
--- a/rigs/kachina/kachina.c
+++ b/rigs/kachina/kachina.c
@@ -24,7 +24,6 @@
 #include <stdlib.h>
 #include <string.h>  /* String function definitions */
 #include <unistd.h>  /* UNIX standard function definitions */
-#include <math.h>
 
 #include "hamlib/rig.h"
 #include "serial.h"
diff --git a/rigs/kenwood/ic10.c b/rigs/kenwood/ic10.c
index 9285f793c..5b2ffbab8 100644
--- a/rigs/kenwood/ic10.c
+++ b/rigs/kenwood/ic10.c
@@ -27,7 +27,6 @@
 #include <stdio.h>
 #include <string.h>  /* String function definitions */
 #include <unistd.h>  /* UNIX standard function definitions */
-#include <math.h>
 #include <ctype.h>   /* character class tests */
 
 #include "hamlib/rig.h"
diff --git a/rigs/kenwood/tmd700.c b/rigs/kenwood/tmd700.c
index 4eeff8f09..1b3ecce21 100644
--- a/rigs/kenwood/tmd700.c
+++ b/rigs/kenwood/tmd700.c
@@ -22,7 +22,6 @@
 #include <hamlib/config.h>
 
 #include <stdlib.h>
-#include <math.h>
 
 #include "hamlib/rig.h"
 #include "kenwood.h"
diff --git a/rigs/kenwood/ts480.c b/rigs/kenwood/ts480.c
index dc7b5e601..46fe0c752 100644
--- a/rigs/kenwood/ts480.c
+++ b/rigs/kenwood/ts480.c
@@ -24,7 +24,6 @@
 
 #include <stdio.h>
 #include <stdlib.h>
-#include <math.h>
 
 #include <hamlib/rig.h>
 #include "cal.h"
diff --git a/rigs/kit/funcube.c b/rigs/kit/funcube.c
index 231bec0b9..f38999bd9 100644
--- a/rigs/kit/funcube.c
+++ b/rigs/kit/funcube.c
@@ -31,7 +31,6 @@
 
 #include <stdlib.h>
 #include <stdio.h>
-#include <math.h>
 #include "hamlib/rig.h"
 #include "token.h"
 #include "misc.h"
diff --git a/rigs/kit/hiqsdr.c b/rigs/kit/hiqsdr.c
index 0a5f6ec51..1e4861a5d 100644
--- a/rigs/kit/hiqsdr.c
+++ b/rigs/kit/hiqsdr.c
@@ -25,7 +25,6 @@
 #include <unistd.h>  /* UNIX standard function definitions */
 #include <fcntl.h>   /* File control definitions */
 #include <errno.h>   /* Error number definitions */
-#include <math.h>
 
 #include "hamlib/rig.h"
 #include "iofunc.h"
diff --git a/rigs/kit/miniVNA.c b/rigs/kit/miniVNA.c
index c7d8c270d..6fa2796ab 100644
--- a/rigs/kit/miniVNA.c
+++ b/rigs/kit/miniVNA.c
@@ -25,7 +25,6 @@
 #include <stdlib.h>
 #include <string.h>  /* String function definitions */
 #include <unistd.h>  /* UNIX standard function definitions */
-#include <math.h>
 
 #include "hamlib/rig.h"
 #include "serial.h"
diff --git a/rigs/lowe/lowe.c b/rigs/lowe/lowe.c
index 24e7bbb3d..70bc5e254 100644
--- a/rigs/lowe/lowe.c
+++ b/rigs/lowe/lowe.c
@@ -25,7 +25,6 @@
 #include <stdlib.h>
 #include <string.h>  /* String function definitions */
 #include <unistd.h>  /* UNIX standard function definitions */
-#include <math.h>
 
 #include "hamlib/rig.h"
 #include "serial.h"
diff --git a/rigs/pcr/pcr.c b/rigs/pcr/pcr.c
index 0febeb334..7e2280b9e 100644
--- a/rigs/pcr/pcr.c
+++ b/rigs/pcr/pcr.c
@@ -34,7 +34,6 @@
 #include <stdlib.h>
 #include <string.h>     /* String function definitions */
 #include <unistd.h>     /* UNIX standard function definitions */
-#include <math.h>
 #include <errno.h>
 #include <ctype.h>
 
diff --git a/rigs/prm80/prm80.c b/rigs/prm80/prm80.c
index 1d31d9a20..b5d094870 100644
--- a/rigs/prm80/prm80.c
+++ b/rigs/prm80/prm80.c
@@ -26,7 +26,6 @@
 #include <string.h>  /* String function definitions */
 #include <unistd.h>  /* UNIX standard function definitions */
 #include <ctype.h>
-#include <math.h>
 
 #include "hamlib/rig.h"
 #include "serial.h"
diff --git a/rigs/racal/ra37xx.c b/rigs/racal/ra37xx.c
index f5d2628c3..af4b2d90c 100644
--- a/rigs/racal/ra37xx.c
+++ b/rigs/racal/ra37xx.c
@@ -24,7 +24,6 @@
 #include <stdlib.h>
 #include <string.h>  /* String function definitions */
 #include <unistd.h>  /* UNIX standard function definitions */
-#include <math.h>
 
 #include "hamlib/rig.h"
 #include "serial.h"
diff --git a/rigs/racal/racal.c b/rigs/racal/racal.c
index e453475e2..c6b6e9ad0 100644
--- a/rigs/racal/racal.c
+++ b/rigs/racal/racal.c
@@ -25,7 +25,6 @@
 #include <stdlib.h>
 #include <string.h>  /* String function definitions */
 #include <unistd.h>  /* UNIX standard function definitions */
-#include <math.h>
 
 #include "hamlib/rig.h"
 #include "serial.h"
diff --git a/rigs/rft/rft.c b/rigs/rft/rft.c
index 54804e1e5..3b4ec33b9 100644
--- a/rigs/rft/rft.c
+++ b/rigs/rft/rft.c
@@ -25,7 +25,6 @@
 #include <stdlib.h>
 #include <string.h>  /* String function definitions */
 #include <unistd.h>  /* UNIX standard function definitions */
-#include <math.h>
 
 #include "hamlib/rig.h"
 #include "serial.h"
diff --git a/rigs/rs/gp2000.c b/rigs/rs/gp2000.c
index 3f48e4457..a48e2ceb3 100644
--- a/rigs/rs/gp2000.c
+++ b/rigs/rs/gp2000.c
@@ -31,7 +31,6 @@
 #include <stdlib.h>
 #include <string.h>     /* String function definitions */
 #include <unistd.h>     /* UNIX standard function definitions */
-#include <math.h>
 
 #include "hamlib/rig.h"
 #include "serial.h"
diff --git a/rigs/rs/rs.c b/rigs/rs/rs.c
index b19f97424..1c386816c 100644
--- a/rigs/rs/rs.c
+++ b/rigs/rs/rs.c
@@ -25,7 +25,6 @@
 #include <stdlib.h>
 #include <string.h>  /* String function definitions */
 #include <unistd.h>  /* UNIX standard function definitions */
-#include <math.h>
 
 #include "hamlib/rig.h"
 #include "serial.h"
diff --git a/rigs/skanti/skanti.c b/rigs/skanti/skanti.c
index bd776ec4d..107040238 100644
--- a/rigs/skanti/skanti.c
+++ b/rigs/skanti/skanti.c
@@ -25,7 +25,6 @@
 #include <stdlib.h>
 #include <string.h>  /* String function definitions */
 #include <unistd.h>  /* UNIX standard function definitions */
-#include <math.h>
 
 #include <hamlib/rig.h>
 #include <serial.h>
diff --git a/rigs/tentec/tentec2.c b/rigs/tentec/tentec2.c
index b1d6132ec..f4b3ed5cb 100644
--- a/rigs/tentec/tentec2.c
+++ b/rigs/tentec/tentec2.c
@@ -57,7 +57,6 @@
 #include <stdlib.h>
 #include <string.h>  /* String function definitions */
 #include <unistd.h>  /* UNIX standard function definitions */
-#include <math.h>
 
 #include "hamlib/rig.h"
 #include "serial.h"
diff --git a/rigs/tentec/tt550.c b/rigs/tentec/tt550.c
index 31ce98169..bccd14e5a 100644
--- a/rigs/tentec/tt550.c
+++ b/rigs/tentec/tt550.c
@@ -28,7 +28,6 @@
 #include <unistd.h>     /* UNIX standard function definitions */
 #include <fcntl.h>      /* File control definitions */
 #include <errno.h>      /* Error number definitions */
-#include <math.h>
 
 #include <hamlib/rig.h>
 #include "serial.h"
diff --git a/rigs/uniden/uniden.c b/rigs/uniden/uniden.c
index 5321bffe0..62b69665c 100644
--- a/rigs/uniden/uniden.c
+++ b/rigs/uniden/uniden.c
@@ -25,7 +25,6 @@
 #include <stdlib.h>
 #include <string.h>  /* String function definitions */
 #include <unistd.h>  /* UNIX standard function definitions */
-#include <math.h>
 
 #include "hamlib/rig.h"
 #include "serial.h"
diff --git a/rigs/uniden/uniden_digital.c b/rigs/uniden/uniden_digital.c
index a6b7695a9..87d771299 100644
--- a/rigs/uniden/uniden_digital.c
+++ b/rigs/uniden/uniden_digital.c
@@ -25,7 +25,6 @@
 #include <stdlib.h>
 #include <string.h>  /* String function definitions */
 #include <unistd.h>  /* UNIX standard function definitions */
-#include <math.h>
 
 #include "hamlib/rig.h"
 #include "serial.h"
diff --git a/rigs/winradio/winradio.c b/rigs/winradio/winradio.c
index 522a3a82b..bd42000b4 100644
--- a/rigs/winradio/winradio.c
+++ b/rigs/winradio/winradio.c
@@ -27,7 +27,6 @@
 #ifdef HAVE_SYS_IOCTL_H
 #include <sys/ioctl.h>
 #endif
-#include <math.h>
 
 #include "hamlib/rig.h"
 #include "serial.h"
diff --git a/rigs/wj/wj.c b/rigs/wj/wj.c
index 93691b8ce..0c4c854ed 100644
--- a/rigs/wj/wj.c
+++ b/rigs/wj/wj.c
@@ -25,7 +25,6 @@
 #include <stdlib.h>
 #include <string.h>  /* String function definitions */
 #include <unistd.h>  /* UNIX standard function definitions */
-#include <math.h>
 
 #include "hamlib/rig.h"
 #include "serial.h"
diff --git a/rigs/yaesu/ft600.c b/rigs/yaesu/ft600.c
index bef535fd3..1e59797b9 100644
--- a/rigs/yaesu/ft600.c
+++ b/rigs/yaesu/ft600.c
@@ -30,7 +30,6 @@
 #include <stdlib.h>
 #include <string.h>
 #include <unistd.h>
-#include <math.h>
 
 #include "hamlib/rig.h"
 #include "serial.h"
diff --git a/rigs/yaesu/ft857.c b/rigs/yaesu/ft857.c
index 78818d021..a926f8bf4 100644
--- a/rigs/yaesu/ft857.c
+++ b/rigs/yaesu/ft857.c
@@ -52,7 +52,6 @@
 
 #include <hamlib/config.h>
 
-#include <math.h>
 #include <stdlib.h>
 #include <string.h>     /* String function definitions */
 #include <unistd.h>     /* UNIX standard function definitions */
diff --git a/rotators/celestron/celestron.c b/rotators/celestron/celestron.c
index 7fc4eb288..e5dd26de1 100644
--- a/rotators/celestron/celestron.c
+++ b/rotators/celestron/celestron.c
@@ -24,7 +24,6 @@
 #include <stdlib.h>
 #include <string.h>
 #include <unistd.h>
-#include <math.h>
 #include <ctype.h>
 
 #include "hamlib/rotator.h"
diff --git a/rotators/cnctrk/cnctrk.c b/rotators/cnctrk/cnctrk.c
index 649e03f9e..f6bae31d9 100644
--- a/rotators/cnctrk/cnctrk.c
+++ b/rotators/cnctrk/cnctrk.c
@@ -21,7 +21,6 @@
 
 #include <hamlib/config.h>
 
-#include <math.h>
 #include <stdlib.h>
 #include <string.h>  /* String function definitions */
 #include <unistd.h>  /* UNIX standard function definitions */
diff --git a/rotators/easycomm/easycomm.c b/rotators/easycomm/easycomm.c
index fa45424f8..cc50099ce 100644
--- a/rotators/easycomm/easycomm.c
+++ b/rotators/easycomm/easycomm.c
@@ -27,7 +27,6 @@
 #include <stdlib.h>
 #include <string.h>  /* String function definitions */
 #include <unistd.h>  /* UNIX standard function definitions */
-#include <math.h>
 
 #include "hamlib/rotator.h"
 #include "serial.h"
diff --git a/rotators/ether6/ether6.c b/rotators/ether6/ether6.c
index a023ef9ad..bf9a84fcc 100644
--- a/rotators/ether6/ether6.c
+++ b/rotators/ether6/ether6.c
@@ -25,7 +25,6 @@
 #include <stdlib.h>
 #include <string.h>  /* String function definitions */
 #include <unistd.h>  /* UNIX standard function definitions */
-#include <math.h>
 
 #include <hamlib/rotator.h>
 #include "serial.h"
diff --git a/rotators/grbltrk/grbltrk.c b/rotators/grbltrk/grbltrk.c
index 8a174a3f5..0a598d6ae 100644
--- a/rotators/grbltrk/grbltrk.c
+++ b/rotators/grbltrk/grbltrk.c
@@ -23,7 +23,6 @@
 #include "config.h"
 #endif
 
-#include <math.h>
 #include <stdlib.h>
 #include <string.h>  /* String function definitions */
 #include <unistd.h>  /* UNIX standard function definitions */
diff --git a/rotators/ioptron/rot_ioptron.c b/rotators/ioptron/rot_ioptron.c
index 55fdb6b81..503a73699 100644
--- a/rotators/ioptron/rot_ioptron.c
+++ b/rotators/ioptron/rot_ioptron.c
@@ -24,7 +24,6 @@
 #include <stdlib.h>
 #include <string.h>
 #include <unistd.h>
-#include <math.h>
 #include <ctype.h>
 #include <stddef.h>
 #include <stdint.h>
diff --git a/rotators/m2/rc2800.c b/rotators/m2/rc2800.c
index 8008dc00b..65cec5cd8 100644
--- a/rotators/m2/rc2800.c
+++ b/rotators/m2/rc2800.c
@@ -24,7 +24,6 @@
 #include <stdlib.h>
 #include <string.h>
 #include <unistd.h>
-#include <math.h>
 #include <ctype.h>
 
 #include "hamlib/rotator.h"
diff --git a/rotators/radant/radant.c b/rotators/radant/radant.c
index c8cfc2315..8abf160f0 100644
--- a/rotators/radant/radant.c
+++ b/rotators/radant/radant.c
@@ -27,7 +27,6 @@
 #include <stdlib.h>
 #include <string.h>  /* String function definitions */
 #include <unistd.h>  /* UNIX standard function definitions */
-#include <math.h>
 
 #include "hamlib/rotator.h"
 #include "serial.h"
diff --git a/rotators/satel/satel.c b/rotators/satel/satel.c
index 6c95b2891..7f99efef3 100644
--- a/rotators/satel/satel.c
+++ b/rotators/satel/satel.c
@@ -27,7 +27,6 @@
 #include <stdlib.h>
 #include <string.h>
 #include <unistd.h>
-#include <math.h>
 #include <ctype.h>
 #include <stddef.h>
 #include <stdint.h>
diff --git a/rotators/spid/spid.c b/rotators/spid/spid.c
index b7ff5e9ea..6c32d2b29 100644
--- a/rotators/spid/spid.c
+++ b/rotators/spid/spid.c
@@ -25,7 +25,6 @@
 #include <stdlib.h>
 #include <string.h>
 #include <unistd.h>
-#include <math.h>
 
 #include "hamlib/rotator.h"
 #include "serial.h"