1 files changed, 1 insertions, 1 deletions
diff --git a/lib/exe/css.php b/lib/exe/css.php
index 91fc11d66..83972d407 100644
--- a/lib/exe/css.php
+++ b/lib/exe/css.php
@@ -390,7 +390,7 @@ function css_datauri($match){
         $data = base64_encode(file_get_contents($local));
     }
     if($data){
-        $url = 'data:image/'.$ext.';base64,'.$data;
+        $url = '\'data:image/'.$ext.';base64,'.$data.'\'';
     }else{
         $url = $base.$url;
     }