diff --git a/src/comm/MockLink.cc b/src/comm/MockLink.cc
index a91506a2e8302e7ca81f6f264a8e085efcbf78ae..f25d15beede022c56abbc3531903639d2ef7ca85 100644
--- a/src/comm/MockLink.cc
+++ b/src/comm/MockLink.cc
@@ -158,7 +158,10 @@ void MockLink::_run1HzTasks(void)
     if (_mavlinkStarted && _connected) {
         _sendHeartBeat();
         _sendVibration();
-        _sendRCChannels();
+        if (!qgcApp()->runningUnitTests()) {
+            // Sending RC Channels during unit test breaks RC tests which does it's own RC simulation
+            _sendRCChannels();
+        }
         if (_sendHomePositionDelayCount > 0) {
             // We delay home position a bit to be more realistic
             _sendHomePositionDelayCount--;