diff --git a/libraries/SRV_Channel/SRV_Channel.cpp b/libraries/SRV_Channel/SRV_Channel.cpp
index 75c9625925..6152303e4c 100644
--- a/libraries/SRV_Channel/SRV_Channel.cpp
+++ b/libraries/SRV_Channel/SRV_Channel.cpp
@@ -20,7 +20,6 @@
 #include <AP_HAL/AP_HAL.h>
 #include <AP_Math/AP_Math.h>
 #include <AP_Vehicle/AP_Vehicle.h>
-#include <AP_Math/AP_Math.h>
 #include "SRV_Channel.h"
 
 extern const AP_HAL::HAL& hal;