diff --git a/lib/gallery.common.js b/lib/gallery.common.js
index 697a33cb3b..b499a2cdc7 100644
--- a/lib/gallery.common.js
+++ b/lib/gallery.common.js
@@ -33,6 +33,7 @@
       var elh = $(el).height();
       var ph = $(this).height();
       var nh = (ph - elh) / 2;
+      if (nh < 1) { var nh = 0; }
       $(el).css('margin-top', nh);
     });
   };