diff --git a/src/main/drivers/pwm_mapping.c b/src/main/drivers/pwm_mapping.c
index c7d4a2480..d250fcff9 100755
--- a/src/main/drivers/pwm_mapping.c
+++ b/src/main/drivers/pwm_mapping.c
@@ -780,7 +780,7 @@ if (init->useBuzzerP6) {
 #endif
 
         if (type == MAP_TO_PPM_INPUT) {
-#ifdef SPARKY
+#if defined(SPARKY) || defined(ALIENFLIGHTF3)
             if (init->useOneshot || isMotorBrushed(init->motorPwmRate)) {
                 ppmAvoidPWMTimerClash(timerHardwarePtr, TIM2);
             }