diff --git a/fhem/FHEM/98_SVG.pm b/fhem/FHEM/98_SVG.pm
index e519a085b..fbf2fc914 100755
--- a/fhem/FHEM/98_SVG.pm
+++ b/fhem/FHEM/98_SVG.pm
@@ -25,6 +25,7 @@ use vars qw(%FW_hiddenroom); # hash of hidden rooms, used by weblink
 use vars qw(%FW_pos);     # scroll position
 use vars qw(%FW_webArgs); # all arguments specified in the GET
 use vars qw($FW_formmethod);
+use vars qw($FW_userAgent);
 
 my $SVG_RET;        # Returned data (SVG)
 sub SVG_calcOffsets($$);