diff --git a/libraries/AP_HAL_ChibiOS/Util.cpp b/libraries/AP_HAL_ChibiOS/Util.cpp
index da1880691d..12f23f0794 100644
--- a/libraries/AP_HAL_ChibiOS/Util.cpp
+++ b/libraries/AP_HAL_ChibiOS/Util.cpp
@@ -28,7 +28,6 @@
 #include <AP_Common/ExpandingString.h>
 #include "sdcard.h"
 #include "shared_dma.h"
-#include <AP_Common/ExpandingString.h>
 #if defined(HAL_PWM_ALARM) || HAL_DSHOT_ALARM || HAL_CANMANAGER_ENABLED
 #include <AP_Notify/AP_Notify.h>
 #endif