diff --git a/app/assets/stylesheets/tags.sass b/app/assets/stylesheets/tags.sass
index 941baf07..0b956ad5 100644
--- a/app/assets/stylesheets/tags.sass
+++ b/app/assets/stylesheets/tags.sass
@@ -53,4 +53,4 @@ ul.ui-autocomplete li
 
 body.tags .event[class*='libre-en-fete-']
   h3:before, & > a:before
-    content: url(lef-small.png)
+    content: image-url(lef-small.png)