diff --git a/src/js/_enqueues/lib/comment-reply.js b/src/js/_enqueues/lib/comment-reply.js
index 723b532073..ea973f41e8 100644
--- a/src/js/_enqueues/lib/comment-reply.js
+++ b/src/js/_enqueues/lib/comment-reply.js
@@ -106,7 +106,9 @@ window.addComment = ( function( window ) {
 			}
 		};
 
-		commentFormElement.addEventListener( 'keydown', submitFormHandler );
+		if ( commentFormElement ) {
+			commentFormElement.addEventListener( 'keydown', submitFormHandler );
+		}
 
 		var links = replyLinks( context );
 		var element;