diff --git a/assets/scss/_sidebar.scss b/assets/scss/_sidebar.scss
index 385cb8cd8e97..0cfbd60d256f 100644
--- a/assets/scss/_sidebar.scss
+++ b/assets/scss/_sidebar.scss
@@ -65,7 +65,7 @@
   }
 
   @include media-breakpoint-up(xl) {
-    max-width: 320px;
+    flex: 0 1 320px;
   }
 }