diff --git a/dist/jquery.fancybox.js b/dist/jquery.fancybox.js
index 806b2703..afd95eb5 100644
--- a/dist/jquery.fancybox.js
+++ b/dist/jquery.fancybox.js
@@ -5137,7 +5137,7 @@
           '<a href="javascript:;" tabindex="0" data-index="' +
           i +
           '"' +
-          (src && src.length ? ' style="background-image:url(' + src + ')"' : 'class="fancybox-thumbs-missing"') +
+          (src && src.length ? ' style="background-image:url(\'' + src + '\')"' : 'class="fancybox-thumbs-missing"') +
           "></a>"
         );
       });
@@ -5629,4 +5629,4 @@
       });
     }
   });
-})(document, jQuery);
\ No newline at end of file
+})(document, jQuery);