diff --git a/fhem/FHEM/10_CUL_HM.pm b/fhem/FHEM/10_CUL_HM.pm
index 03c17d229..0f18f0f2a 100755
--- a/fhem/FHEM/10_CUL_HM.pm
+++ b/fhem/FHEM/10_CUL_HM.pm
@@ -163,8 +163,9 @@ CUL_HM_Define($$)
     if($chiefHash) {
       my $cname = $chiefHash->{NAME};
       if($attr{$cname}) {
-        foreach my $attrName (keys %{$attr{$cname}}) {
-          $attr{$name}{$attrName} = $attr{$cname}{$attrName};
+        foreach my $attrName ("model", "subtype", "hmclass") {
+          $attr{$name}{$attrName} = $attr{$cname}{$attrName}
+            if($attr{$cname}{$attrName});
         }
       }
     }