diff --git a/public/app/features/panel/panel_directive.ts b/public/app/features/panel/panel_directive.ts
index 56a85e8a983..6c31e83d5a7 100644
--- a/public/app/features/panel/panel_directive.ts
+++ b/public/app/features/panel/panel_directive.ts
@@ -138,7 +138,7 @@ module.directive('grafanaPanel', ($rootScope, $document, $timeout) => {
         }
 
         if (transparentLastState !== ctrl.panel.transparent) {
-          panelContainer.toggleClass('panel-transparent', ctrl.panel.transparent === true);
+          panelContainer.toggleClass('panel-container--transparent', ctrl.panel.transparent === true);
           transparentLastState = ctrl.panel.transparent;
         }