diff --git a/guacamole/src/main/webapp/app/client/styles/display.css b/guacamole/src/main/webapp/app/client/styles/display.css
index 8b6cf0a68..0233f4259 100644
--- a/guacamole/src/main/webapp/app/client/styles/display.css
+++ b/guacamole/src/main/webapp/app/client/styles/display.css
@@ -46,6 +46,7 @@ div.displayOuter {
 
 div.displayMiddle {
     width: 100%;
+    height: 100%;
     display: table-cell;
     vertical-align: middle;
     text-align: center;