diff --git a/src/static/js/ace2_inner.js b/src/static/js/ace2_inner.js
index 9b6ea6352..06e8908e3 100644
--- a/src/static/js/ace2_inner.js
+++ b/src/static/js/ace2_inner.js
@@ -92,7 +92,7 @@ function Ace2Inner() {
 
   let outsideKeyDown = noop;
 
-  let outsideKeyPress = function () { return true; };
+  let outsideKeyPress = function (e) { return true; };
 
   let outsideNotifyDirty = noop;