diff --git a/src/main/fc/rc.c b/src/main/fc/rc.c
index 1d2a8e9d40..b91d771e36 100644
--- a/src/main/fc/rc.c
+++ b/src/main/fc/rc.c
@@ -980,7 +980,7 @@ void initRcProcessing(void)
 
         rcSmoothingUpdateFilterTau(&rcSmoothingData);
 
-        pt3FilterUpdateCutoff(&rcSmoothingData.filterSetpoint[3], pt3FilterGainFromDelay(throttleTau, dT));
+        pt3FilterUpdateCutoff(&rcSmoothingData.filterSetpoint[THROTTLE], pt3FilterGainFromDelay(throttleTau, dT));
     }
 }