diff --git a/fhem/FHEM/10_MYSENSORS_DEVICE.pm b/fhem/FHEM/10_MYSENSORS_DEVICE.pm
index 8bcc6a7a5..d47e08ff1 100755
--- a/fhem/FHEM/10_MYSENSORS_DEVICE.pm
+++ b/fhem/FHEM/10_MYSENSORS_DEVICE.pm
@@ -605,6 +605,10 @@ sub sendClientMessage($%) {
 	refreshInternalMySTimer($hash,"Ack") if (($hash->{ack} or $hash->{IODev}->{ack}) and $hash->{timeoutAck}) ; 
 }
 
+sub onStreamMessage($$) {
+	my ($hash, $msg) = @_;
+}
+
 sub rawToMappedReading($$$$) {
   my($hash, $type, $childId, $value) = @_;