diff --git a/camlibs/canon/serial.c b/camlibs/canon/serial.c
index 2b749ede6..0fa19e0c0 100644
--- a/camlibs/canon/serial.c
+++ b/camlibs/canon/serial.c
@@ -21,7 +21,6 @@
 #include <sys/ioctl.h>
 
 #include <gphoto2.h>
-#include <gpio/gpio.h>
 
 #include "util.h"
 #include "psa50.h"