diff --git a/fhem/FHEM/33_readingsGroup.pm b/fhem/FHEM/33_readingsGroup.pm
index cbff7f4b7..5ebeb9ad6 100644
--- a/fhem/FHEM/33_readingsGroup.pm
+++ b/fhem/FHEM/33_readingsGroup.pm
@@ -1233,7 +1233,7 @@ readingsGroup_Update($$$)
               $ntfy->{inform}{type} ne "status");
       next if( !$ntfy->{inform}{devices}{$name} );
       if(!FW_addToWritebuffer($ntfy,
-          FW_longpollInfo($ntfy->{inform}{fmt}, "$name-$item", "", $value ) ."\n" )) {
+          FW_longpollInfo($ntfy->{inform}{fmt}, "$name-$item", $value, $value ) ."\n" )) {
         my $name = $ntfy->{NAME};
         Log3 $name, 4, "Closing connection $name due to full buffer in FW_Notify";
         TcpServer_Close($ntfy, 1);