diff --git a/src/skins/vector/css/common.css b/src/skins/vector/css/common.css
index 64cf4d6d..b68b5813 100644
--- a/src/skins/vector/css/common.css
+++ b/src/skins/vector/css/common.css
@@ -153,6 +153,8 @@ input[type=text]:focus, textarea:focus {
     width: 60%;
     max-width: 704px;
     box-shadow: 0 1px 0 0 rgba(0, 0, 0, 0.2);
+    max-height: 80%;
+    overflow-y: scroll;
 }
 
 .mx_Dialog_background {