diff --git a/src/main/target/AIRHEROF3/target.c b/src/main/target/AIRHEROF3/target.c
index 08ff2bcbc..4b516689a 100755
--- a/src/main/target/AIRHEROF3/target.c
+++ b/src/main/target/AIRHEROF3/target.c
@@ -20,6 +20,7 @@
 #include <platform.h>
 #include "drivers/io.h"
 #include "drivers/pwm_mapping.h"
+#include "drivers/timer.h"
 
 const uint16_t multiPPM[] = {
     PWM4  | (MAP_TO_PPM_INPUT << 8),        // PPM input