diff --git a/src/main/flight/mixer.c b/src/main/flight/mixer.c
index e92d51308f..0f1e76939d 100644
--- a/src/main/flight/mixer.c
+++ b/src/main/flight/mixer.c
@@ -485,7 +485,9 @@ static void calculateThrottleAndCurrentMotorEndpoints(timeUs_t currentTimeUs)
     static uint16_t rcThrottlePrevious = 0;   // Store the last throttle direction for deadband transitions
     static timeUs_t reversalTimeUs = 0; // time when motors last reversed in 3D mode
     static float motorRangeMinIncrease = 0;
+#ifdef USE_DYN_IDLE
     static float oldMinRps;
+#endif
     float currentThrottleInputRange = 0;
 
     if (featureIsEnabled(FEATURE_3D)) {