diff --git a/rigs/aor/aor.c b/rigs/aor/aor.c
index 3f69d7237..1c1f5543f 100644
--- a/rigs/aor/aor.c
+++ b/rigs/aor/aor.c
@@ -22,7 +22,6 @@
 #include <hamlib/config.h>
 
 #include <stdio.h>
-#include <ctype.h>
 
 #include "hamlib/rig.h"
 #include "serial.h"
diff --git a/rigs/pcr/pcr.c b/rigs/pcr/pcr.c
index d09a36fb7..e80622201 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 <errno.h>
-#include <ctype.h>
 
 #include "hamlib/rig.h"
 #include "serial.h"