diff --git a/client/src/app/core/menu/menu.service.ts b/client/src/app/core/menu/menu.service.ts
index f7daf78ebd4f..f1b9bea76759 100644
--- a/client/src/app/core/menu/menu.service.ts
+++ b/client/src/app/core/menu/menu.service.ts
@@ -13,7 +13,7 @@ export class MenuService {
     private screenService: ScreenService
   ) {
     // Do not display menu on small or touch screens
-    if (this.screenService.isInSmallView() || !!this.screenService.isInTouchScreen()) {
+    if (this.screenService.isInSmallView() || this.screenService.isInTouchScreen()) {
       this.setMenuDisplay(false)
     }
 
diff --git a/client/src/sass/bootstrap.scss b/client/src/sass/bootstrap.scss
index b0d3d9cd93b4..a3b60198ccee 100644
--- a/client/src/sass/bootstrap.scss
+++ b/client/src/sass/bootstrap.scss
@@ -167,7 +167,7 @@ $icon-font-path: '~@neos21/bootstrap3-glyphicons/assets/fonts/';
         content: '';
         display: block;
         position: fixed;
-        z-index: z('header');
+        z-index: z('header') - 1;
       }
     }
   }