diff --git a/src/lib/LBT/LBT.cpp b/src/lib/LBT/LBT.cpp
index 760d5d536b..3b650c2ece 100644
--- a/src/lib/LBT/LBT.cpp
+++ b/src/lib/LBT/LBT.cpp
@@ -112,6 +112,9 @@ void ICACHE_RAM_ATTR SetClearChannelAssessmentTime(void)
 
 SX12XX_Radio_Number_t ICACHE_RAM_ATTR ChannelIsClear(SX12XX_Radio_Number_t radioNumber)
 {
+  if (radioNumber == SX12XX_Radio_NONE)
+    return SX12XX_Radio_NONE;
+
   LBTSuccessCalc.inc(); // Increment count for every channel check
 
   if (!LBTEnabled)
@@ -161,7 +164,7 @@ SX12XX_Radio_Number_t ICACHE_RAM_ATTR ChannelIsClear(SX12XX_Radio_Number_t radio
       clearChannelsMask |= SX12XX_Radio_2;
     }
   }
-  
+
   // Useful to debug if and how long the rssi wait is, and rssi threshold rssiCutOff
   // DBGLN("wait: %d, cutoff: %d, rssi: %d %d, %s", validRSSIdelayUs - elapsed, rssiCutOff, rssiInst1, rssiInst2, clearChannelsMask ? "clear" : "in use");
 
diff --git a/src/src/rx_main.cpp b/src/src/rx_main.cpp
index d1b123e2b1..1ace16f3be 100644
--- a/src/src/rx_main.cpp
+++ b/src/src/rx_main.cpp
@@ -507,27 +507,31 @@ bool ICACHE_RAM_ATTR HandleSendTelemetryResponse()
 
     OtaGeneratePacketCrc(&otaPkt);
 
-    SX12XX_Radio_Number_t transmittingRadio = geminiMode ? SX12XX_Radio_All : Radio.GetLastSuccessfulPacketRadio();
-
+    SX12XX_Radio_Number_t transmittingRadio;
+    if (config.GetForceTlmOff())
+    {
+        transmittingRadio = SX12XX_Radio_NONE;
+    }
+    else if (geminiMode)
+    {
+        transmittingRadio = SX12XX_Radio_All;
+    }
+    else
+    {
+        transmittingRadio = Radio.GetLastSuccessfulPacketRadio();
+    }
 #if defined(Regulatory_Domain_EU_CE_2400)
     transmittingRadio &= ChannelIsClear(transmittingRadio);   // weed out the radio(s) if channel in use
+#endif
+
+    Radio.TXnb((uint8_t*)&otaPkt, ExpressLRS_currAirRate_Modparams->PayloadLength, transmittingRadio);
 
     if (transmittingRadio == SX12XX_Radio_NONE)
     {
-        // No packet will be sent due to LBT.
+        // No packet will be sent due to LBT / Telem forced off.
         // Defer TXdoneCallback() to prepare for TLM when the IRQ is normally triggered.
-        deferExecutionMicros(ExpressLRS_currAirRate_RFperfParams->TOA, []() {
-            Radio.TXdoneCallback();
-        });
+        deferExecutionMicros(ExpressLRS_currAirRate_RFperfParams->TOA, Radio.TXdoneCallback);
     }
-#endif
-
-    if (config.GetForceTlmOff())
-    {
-        transmittingRadio = SX12XX_Radio_NONE;
-    }
-
-    Radio.TXnb((uint8_t*)&otaPkt, ExpressLRS_currAirRate_Modparams->PayloadLength, transmittingRadio);
 
     return true;
 }