diff --git a/app/css/app_mobile.css b/app/css/app_mobile.css
index b2f68b30..e08addfd 100644
--- a/app/css/app_mobile.css
+++ b/app/css/app_mobile.css
@@ -985,6 +985,7 @@ span.mobile_modal_action {
 }
 span.mobile_modal_upload_action {
   position: relative;
+  overflow: hidden;
 }
 a.mobile_modal_action:hover,
 a.mobile_modal_action:active {