diff --git a/src/browser/base/content/zen-styles/zen-theme.css b/src/browser/base/content/zen-styles/zen-theme.css
index 2cd9f7c94..7150dd39d 100644
--- a/src/browser/base/content/zen-styles/zen-theme.css
+++ b/src/browser/base/content/zen-styles/zen-theme.css
@@ -167,7 +167,7 @@
     }
   }
 
-  @media (-moz-platform: linux) and -moz-pref('zen.widget.linux.transparency'){
+  @media (-moz-platform: linux) and -moz-pref('zen.widget.linux.transparency') {
     background: transparent;
     --zen-themed-toolbar-bg-transparent: transparent;
   }