diff --git a/libraries/AP_Baro/AP_Baro_Backend.h b/libraries/AP_Baro/AP_Baro_Backend.h
index 8706bbb70a..82b8e7aaea 100644
--- a/libraries/AP_Baro/AP_Baro_Backend.h
+++ b/libraries/AP_Baro/AP_Baro_Backend.h
@@ -1,7 +1,6 @@
 #pragma once
 
 #include "AP_Baro.h"
-#include <AP_Common/Semaphore.h>
 
 class AP_Baro_Backend
 {