diff --git a/fhem/FHEM/01_FHEMWEB.pm b/fhem/FHEM/01_FHEMWEB.pm
index 83919336a..54bf12947 100644
--- a/fhem/FHEM/01_FHEMWEB.pm
+++ b/fhem/FHEM/01_FHEMWEB.pm
@@ -797,6 +797,7 @@ FW_closeConn($)
                      $FW_userAgent =~ m/(iPhone|iPad|iPod)/);
     if(!$FW_httpheader{Connection} || $cc) {
       TcpServer_Close($hash, 1, !$hash->{inform});
+      delete $FW_svgData{$hash->{NAME}};
     }
   }