diff --git a/app/assets/stylesheets/framework/sidebar.scss b/app/assets/stylesheets/framework/sidebar.scss
index 78eefa538c300e38af222b81c8cbe8466a16255e..1a2220f3b40aa24fc5c5a76328a2a008e4e1681a 100644
--- a/app/assets/stylesheets/framework/sidebar.scss
+++ b/app/assets/stylesheets/framework/sidebar.scss
@@ -17,7 +17,7 @@
     height: 100%;
     overflow: hidden;
     transition: width $sidebar-transition-duration;
-    @include box-shadow(2px 0px 16px 0px #bbb);
+    @include box-shadow(2px 0 16px 0 #bbb);
   }
 }