diff --git a/lib/Slic3r/Config.pm b/lib/Slic3r/Config.pm
index 85cbf1dba..8def706cf 100644
--- a/lib/Slic3r/Config.pm
+++ b/lib/Slic3r/Config.pm
@@ -737,7 +737,8 @@ sub write_ini {
     
     open my $fh, '>', $file;
     binmode $fh, ':utf8';
-    printf $fh "# generated by Slic3r $Slic3r::VERSION\n";
+    my $localtime = localtime;
+    printf $fh "# generated by Slic3r $Slic3r::VERSION on $localtime\n";
     foreach my $category (sort keys %$ini) {
         printf $fh "\n[%s]\n", $category if $category ne '_';
         foreach my $key (sort keys %{$ini->{$category}}) {