diff --git a/koha-tmpl/intranet-tmpl/lib/jquery/plugins/jquery.fixFloat.js b/koha-tmpl/intranet-tmpl/lib/jquery/plugins/jquery.fixFloat.js
index dcfaf5fe6b..a7789200d1 100644
--- a/koha-tmpl/intranet-tmpl/lib/jquery/plugins/jquery.fixFloat.js
+++ b/koha-tmpl/intranet-tmpl/lib/jquery/plugins/jquery.fixFloat.js
@@ -28,7 +28,7 @@
                     "visibility": "hidden"
             });
             tbhBis.width(tbh.outerWidth(true));
-            tbhBis.height(tbh.outerHeight(true));
+            tbhBis.height(tbh.innerHeight(true));
             tbhBis.attr('id', tbh.attr('id')+'Bis'); // Avoid 2 elts with the same id
             tbh.after(tbhBis);
             tbh.width(tbh.width());