diff --git a/admin/code/LeftAndMain.php b/admin/code/LeftAndMain.php
index 4dd7f242d..0bdeb864f 100644
--- a/admin/code/LeftAndMain.php
+++ b/admin/code/LeftAndMain.php
@@ -1238,7 +1238,7 @@ class LeftAndMain extends Controller implements PermissionProvider {
 	 * @return String
 	 */
 	function BaseCSSClasses() {
-		return $this->CSSClasses();
+		return $this->CSSClasses('Controller');
 	}
 	
 	function IsPreviewExpanded() {
diff --git a/admin/templates/Includes/LeftAndMain_Content.ss b/admin/templates/Includes/LeftAndMain_Content.ss
index d814bf54b..05f1082ed 100644
--- a/admin/templates/Includes/LeftAndMain_Content.ss
+++ b/admin/templates/Includes/LeftAndMain_Content.ss
@@ -1,4 +1,4 @@
-<div class="cms-content center" data-layout-type="border">
+<div class="cms-content center $BaseCSSClasses" data-layout-type="border">
 
 	$Tools