diff --git a/src/js/modal.js b/src/js/modal.js
index 979d2683cbc93e27745260929e95d4f8039cc1ce..470256b3bd18fadc46607baea3562378f5f58729 100644
--- a/src/js/modal.js
+++ b/src/js/modal.js
@@ -96,7 +96,7 @@
                 headerHeight = headerHeight($header);
             }
             bodyCss.maxHeight = winHeight - headerHeight;
-            bodyCss.overflow = $body.outerHeight() > bodyCss.maxHeight ? 'auto' : 'visible';
+            bodyCss.overflow = $body[0].scrollHeight > bodyCss.maxHeight ? 'auto' : 'visible';
         }
         $body.css(bodyCss);