diff --git a/client/coral-plugin-infobox/InfoBox.js b/client/coral-plugin-infobox/InfoBox.js
index 2aaa2f486..db2ea22c4 100644
--- a/client/coral-plugin-infobox/InfoBox.js
+++ b/client/coral-plugin-infobox/InfoBox.js
@@ -3,7 +3,7 @@ const packagename = 'coral-plugin-infobox';
 
 const InfoBox = ({enable, content}) =>
 <div
-  className={`${packagename}-info ${enable ? '' : ', hidden'}` }>
+  className={`${packagename}-info ${enable ? null : ', hidden'}` }>
   {content}
 </div>;