From cc4d7dd9a3a21cf0c4b046d8afe51f766b8d2979 Mon Sep 17 00:00:00 2001
From: justme1968 <justme1968@2b470e98-0d58-463d-a4d8-8e2adae1ed80>
Date: Sat, 22 Feb 2014 20:29:15 +0000
Subject: [PATCH] fixed warning

git-svn-id: https://svn.fhem.de/fhem/trunk@5020 2b470e98-0d58-463d-a4d8-8e2adae1ed80
---
 fhem/FHEM/33_readingsGroup.pm | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/fhem/FHEM/33_readingsGroup.pm b/fhem/FHEM/33_readingsGroup.pm
index b39eecc8e..f00ee3652 100644
--- a/fhem/FHEM/33_readingsGroup.pm
+++ b/fhem/FHEM/33_readingsGroup.pm
@@ -246,7 +246,7 @@ readingsGroup_makeLink($$$)
       $txt = "<a style=\"cursor:pointer\" onClick=\"FW_cmd('$FW_ME$FW_subdir?XHR=1&$link')\">$txt</a>";
     } else {
       my $room = $FW_webArgs{room};
-      $room = "&detail=$FW_webArgs{detail}";
+      $room = "&detail=$FW_webArgs{detail}" if( $FW_webArgs{"detail"} );
       my $srf = $room ? "&room=$room" : "";
       $srf = $room if( $room && $room =~ m/^&/ );
       $txt = "<a href=\"$FW_ME$FW_subdir?$link$srf\">$txt</a>";