1 files changed, 4 insertions, 0 deletions

diff --git a/js/slide-controller.js b/js/slide-controller.js
index 13faa93..416c17c 100644
--- a/js/slide-controller.js
+++ b/js/slide-controller.js
@@ -146,6 +146,10 @@
                 // }
 
                 if ('keyCode' in data) {
+                        if (isNaN(data.keyCode)) {
+                                return;
+                        }
+
                         this.keyLock = data.keyCode;
 
                         var evt = document.createEvent('Event');