diff --git a/fhem/FHEM/92_FileLog.pm b/fhem/FHEM/92_FileLog.pm
index 17df1e564..0d22ea716 100644
--- a/fhem/FHEM/92_FileLog.pm
+++ b/fhem/FHEM/92_FileLog.pm
@@ -570,6 +570,7 @@ FileLog_logWrapper($)
     FW_pO "<td>";
     my $logtype = $defs{$d}{NAME};
     my $wl = "&amp;pos=" . join(";", map {"$_=$FW_pos{$_}"} keys %FW_pos);
+    $wl .= "&plotReplace=$FW_webArgs{plotReplace}" if($FW_webArgs{plotReplace});
     my $arg = "$FW_ME/SVG_showLog&dev=$logtype&logdev=$d".
                 "&gplotfile=$type&logfile=$file$wl";
     if(AttrVal($d,"plotmode",$FW_plotmode) eq "SVG") {
diff --git a/fhem/FHEM/98_SVG.pm b/fhem/FHEM/98_SVG.pm
index 546807dcb..ffc456961 100644
--- a/fhem/FHEM/98_SVG.pm
+++ b/fhem/FHEM/98_SVG.pm
@@ -745,7 +745,7 @@ SVG_readgplotfile($$$)
 
   my $specval = AttrVal($wl, "plotfunction", undef);
 
-  my $plotReplace = AttrVal($wl, "plotReplace", undef);
+  my $plotReplace = AttrVal($wl, "plotReplace", $FW_webArgs{plotReplace});
   my $pr;
   (undef, $pr) = parseParams($plotReplace,"\\s"," ") if($plotReplace);
   my $prSubst = sub($)
@@ -838,7 +838,7 @@ SVG_substcfg($$$$$$)
   my $gplot_script = join("", @{$cfg});
   $gplot_script .=  $plot if(!$splitret);
 
-  my $plotReplace = AttrVal($wl, "plotReplace", undef);
+  my $plotReplace = AttrVal($wl, "plotReplace", $FW_webArgs{plotReplace});
   if($plotReplace) {
     my ($list, $pr) = parseParams($plotReplace, "\\s"," ");
     for my $k (keys %$pr) {