onkeydown handlers: fix default keyboard events not being blocked if necessary

1 files changed, 1 insertions, 1 deletions

diff --git a/js/prefs.js b/js/prefs.js
index c89c0494f..afbdee0c9 100755
--- a/js/prefs.js
+++ b/js/prefs.js
@@ -76,7 +76,7 @@ require(["dojo/_base/kernel",
 				initSecondStage: function() {
 					this.enableCsrfSupport();
 
-					document.onkeydown = (event) => { App.hotkeyHandler(event) };
+					document.onkeydown = (event) => { return App.hotkeyHandler(event) };
 					App.setLoadingProgress(50);
 					Notify.close();