diff --git a/view/theme/frio/css/style.css b/view/theme/frio/css/style.css
index d79fd66591..2e47761115 100644
--- a/view/theme/frio/css/style.css
+++ b/view/theme/frio/css/style.css
@@ -419,7 +419,7 @@ nav.navbar {
 }
 #topbar-first .navbar-toggle {
     margin-top: 5px;
-    margin-bottom: 0; /* adding a bottom margin is useless */
+    margin-bottom: 0;
 }
 #topbar-first .nav > li > a,
 #topbar-first .nav > li > button,