diff --git a/src/components/TopNavHeader/index.js b/src/components/TopNavHeader/index.js
index a4a277e0..e20b17ef 100644
--- a/src/components/TopNavHeader/index.js
+++ b/src/components/TopNavHeader/index.js
@@ -9,7 +9,7 @@ export default class TopNavHeader extends PureComponent {
     super(props);
 
     this.state = {
-      maxWidth: (props.contentWidth === 'Fixed' ? 1200 : window.innerWidth) - 330 - 165 - 4,
+      maxWidth: (props.contentWidth === 'Fixed' ? 1200 : window.innerWidth) - 330 - 165 - 4 - 26,
     };
   }