diff --git a/libraries/GCS_MAVLink/GCS_Common.cpp b/libraries/GCS_MAVLink/GCS_Common.cpp
index ead11eab5a..1b79ede062 100644
--- a/libraries/GCS_MAVLink/GCS_Common.cpp
+++ b/libraries/GCS_MAVLink/GCS_Common.cpp
@@ -25,7 +25,6 @@
 #include <AP_Camera/AP_Camera.h>
 #include <AP_Gripper/AP_Gripper.h>
 #include <AP_BLHeli/AP_BLHeli.h>
-#include <AP_Common/Semaphore.h>
 #include <AP_RSSI/AP_RSSI.h>
 #include <AP_Scheduler/AP_Scheduler.h>
 #include <AP_Mount/AP_Mount.h>