From f1891fedb4060f24c28eb43d5d49d9083e187189 Mon Sep 17 00:00:00 2001
From: Salandora <salandora@gmail.com>
Date: Thu, 6 Oct 2016 19:20:04 +0200
Subject: [PATCH] Fixed a bug which caused the layer up/down keyboard
 implementation to fail.

---
 src/octoprint/static/js/app/viewmodels/gcode.js | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/src/octoprint/static/js/app/viewmodels/gcode.js b/src/octoprint/static/js/app/viewmodels/gcode.js
index 7a525b40..d167fb14 100644
--- a/src/octoprint/static/js/app/viewmodels/gcode.js
+++ b/src/octoprint/static/js/app/viewmodels/gcode.js
@@ -524,16 +524,16 @@ $(function() {
         };
 
         self.onMouseOver = function(data, event) {
-            if (!self.settings.feature_keyboardControl() || self.layerSlider != undefined) return;
+            if (!self.settings.feature_keyboardControl()) return;
             $("#canvas_container").focus();
 
         };
         self.onMouseOut = function(data, event) {
-            if (!self.settings.feature_keyboardControl() || self.layerSlider != undefined) return;
+            if (!self.settings.feature_keyboardControl()) return;
             $("#canvas_container").blur();
         };
         self.onKeyDown = function(data, event) {
-            if (!self.settings.feature_keyboardControl() || self.layerSlider != undefined) return;
+            if (!self.settings.feature_keyboardControl() || self.layerSlider === undefined) return;
 
             var value = self.currentLayer;
             switch(event.which){