diff --git a/amplifiers/elecraft/kpa.h b/amplifiers/elecraft/kpa.h
index fcbc4939a..b986d272a 100644
--- a/amplifiers/elecraft/kpa.h
+++ b/amplifiers/elecraft/kpa.h
@@ -28,7 +28,6 @@
 
 #include <hamlib/amplifier.h>
 #include <iofunc.h>
-#include <serial.h>
 
 // Is this big enough?
 #define KPABUFSZ 100
diff --git a/amplifiers/expert/expert.h b/amplifiers/expert/expert.h
index d2fdb4f32..28ed215ab 100644
--- a/amplifiers/expert/expert.h
+++ b/amplifiers/expert/expert.h
@@ -28,7 +28,6 @@
 
 #include <hamlib/amplifier.h>
 #include <iofunc.h>
-#include <serial.h>
 
 // Is this big enough?
 #define KPABUFSZ 100
diff --git a/amplifiers/gemini/gemini.h b/amplifiers/gemini/gemini.h
index d32d1db0c..a52dc2d02 100644
--- a/amplifiers/gemini/gemini.h
+++ b/amplifiers/gemini/gemini.h
@@ -28,7 +28,6 @@
 
 #include <hamlib/amplifier.h>
 #include <iofunc.h>
-#include <serial.h>
 
 // Is this big enough?
 #define GEMINIBUFSZ 1024
diff --git a/rigs/alinco/dxsr8.c b/rigs/alinco/dxsr8.c
index 4eaf5467b..c639d9720 100644
--- a/rigs/alinco/dxsr8.c
+++ b/rigs/alinco/dxsr8.c
@@ -24,7 +24,6 @@
 #include <string.h>  /* String function definitions */
 
 #include <hamlib/rig.h>
-#include <serial.h>
 #include "tones.h"
 #include <misc.h>
 #include <iofunc.h>
diff --git a/rigs/commradio/frame.c b/rigs/commradio/frame.c
index 582de27fd..827073faf 100644
--- a/rigs/commradio/frame.c
+++ b/rigs/commradio/frame.c
@@ -8,7 +8,6 @@
 #include <unistd.h>
 
 #include <hamlib/rig.h>
-#include <serial.h>
 
 #include "frame.h"