diff --git a/src/main/rx/rx.c b/src/main/rx/rx.c
index 95e7a5d5f9..31438d821c 100644
--- a/src/main/rx/rx.c
+++ b/src/main/rx/rx.c
@@ -757,7 +757,7 @@ static void updateRSSIPWM(void)
     int16_t pwmRssi = rcData[rxConfig()->rssi_channel - 1];
 
     // Range of rawPwmRssi is [1000;2000]. rssi should be in [0;1023];
-    setRssiDirect(scaleRange(pwmRssi, PWM_RANGE_MIN, PWM_RANGE_MAX, 0, RSSI_MAX_VALUE), RSSI_SOURCE_RX_CHANNEL);
+    setRssiDirect(scaleRange(constrain(pwmRssi, PWM_RANGE_MIN, PWM_RANGE_MAX), PWM_RANGE_MIN, PWM_RANGE_MAX, 0, RSSI_MAX_VALUE), RSSI_SOURCE_RX_CHANNEL);
 }
 
 static void updateRSSIADC(timeUs_t currentTimeUs)