diff --git a/res/css/structures/_LeftPanel.scss b/res/css/structures/_LeftPanel.scss
index 17e9cac1e4..7cf6dd1119 100644
--- a/res/css/structures/_LeftPanel.scss
+++ b/res/css/structures/_LeftPanel.scss
@@ -1,5 +1,6 @@
 /*
 Copyright 2015, 2016 OpenMarket Ltd
+Copyright 2018 New Vector Ltd
 
 Licensed under the Apache License, Version 2.0 (the "License");
 you may not use this file except in compliance with the License.
@@ -54,7 +55,7 @@ limitations under the License.
 
 }
 
-.mx_LeftPanel .mx_AppTileMini {
+.mx_LeftPanel .mx_AppTile_mini {
     height: 132px;
 }
 
diff --git a/res/css/views/rooms/_AppsDrawer.scss b/res/css/views/rooms/_AppsDrawer.scss
index e7f5697b27..4a46063376 100644
--- a/res/css/views/rooms/_AppsDrawer.scss
+++ b/res/css/views/rooms/_AppsDrawer.scss
@@ -75,7 +75,7 @@ limitations under the License.
     border-radius: 2px;
 }
 
-.mx_AppTileMini {
+.mx_AppTile_mini {
     max-width: 960px;
     width: 100%;
     height: 100%;
@@ -87,7 +87,7 @@ limitations under the License.
     height: 280px;
 }
 
-.mx_AppTileMini .mx_AppTile_persistedWrapper {
+.mx_AppTile_mini .mx_AppTile_persistedWrapper {
     height: 114px;
 }
 
diff --git a/src/components/views/elements/AppTile.js b/src/components/views/elements/AppTile.js
index 100276f933..534a490a32 100644
--- a/src/components/views/elements/AppTile.js
+++ b/src/components/views/elements/AppTile.js
@@ -618,7 +618,7 @@ export default class AppTile extends React.Component {
 
         let appTileClass;
         if (this.props.miniMode) {
-            appTileClass = 'mx_AppTileMini';
+            appTileClass = 'mx_AppTile_mini';
         } else if (this.props.fullWidth) {
             appTileClass = 'mx_AppTileFullWidth';
         } else {