diff --git a/fhem/FHEM/98_SVG.pm b/fhem/FHEM/98_SVG.pm
index e2a469fa1..caa0f3eaf 100644
--- a/fhem/FHEM/98_SVG.pm
+++ b/fhem/FHEM/98_SVG.pm
@@ -889,8 +889,11 @@ SVG_substcfg($$$$$$)
 sub
 SVG_tspec(@)
 {
+  my $d=$_[3];
+  $d = 28 if($d==29 && $_[4]==1 && $_[5]%4);
+  $d = 30 if($d==31 && ($_[4] =~ /3|5|8|10/));
   return sprintf("%04d-%02d-%02d_%02d:%02d:%02d",
-                 $_[5]+1900,$_[4]+1,$_[3],$_[2],$_[1],$_[0]);
+                 $_[5]+1900,$_[4]+1,$d,$_[2],$_[1],$_[0]);
 }
 
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