diff --git a/app/assets/stylesheets/darkswarm/modals.css.scss b/app/assets/stylesheets/darkswarm/modals.css.scss
index a74f9693dbc..bba448fa62a 100644
--- a/app/assets/stylesheets/darkswarm/modals.css.scss
+++ b/app/assets/stylesheets/darkswarm/modals.css.scss
@@ -20,6 +20,7 @@ dialog, .reveal-modal {
   // Small - when modal IS full screen
   @media only screen and (max-width: 640px) {
     height: 500px;
+    max-height: 100%;
     position: absolute !important;
     top: 0;
     left: 0;