diff --git a/fhem/FHEM/10_ZWave.pm b/fhem/FHEM/10_ZWave.pm
index a72f31a05..a5919b3b8 100755
--- a/fhem/FHEM/10_ZWave.pm
+++ b/fhem/FHEM/10_ZWave.pm
@@ -1504,7 +1504,9 @@ ZWave_Parse($$@)
 
   if(!$hash) {
     $id=hex($id); $baseId=hex($baseId); $ep=hex($ep);
-    my $ret = "UNDEFINED ZWave_Endpoint_$baseId.$ep ZWave $homeId $id";
+    # $ep eq "0": Msg from a device known to the ZWDongle, but not to FHEM.
+    my $nn = "ZWave_Node_$baseId".($ep eq "0" ? "" : ".$ep");
+    my $ret = "UNDEFINED $nn ZWave $homeId $id";
     Log3 $ioName, 3, "$ret, please define it";
     DoTrigger("global", $ret);
     return "";