diff --git a/res/controllers/Numark-Mixtrack-Platinum-scripts.js b/res/controllers/Numark-Mixtrack-Platinum-scripts.js
index 7b523bdb5e6..e8c7a220585 100644
--- a/res/controllers/Numark-Mixtrack-Platinum-scripts.js
+++ b/res/controllers/Numark-Mixtrack-Platinum-scripts.js
@@ -265,7 +265,7 @@ MixtrackPlatinum.EffectUnit = function (unitNumbers) {
             components.Pot.prototype.input.call(this, channel, control, value, status, group);
         },
         connect: function() {
-            this.focus_connection = engine.makeConnection(eu.group, "focused_effect", this.onFocusChange);
+            this.focus_connection = engine.makeConnection(eu.group, "focused_effect", this.onFocusChange.bind(this));
             this.focus_connection.trigger();
         },
         disconnect: function() {
@@ -367,7 +367,7 @@ MixtrackPlatinum.EffectUnit = function (unitNumbers) {
         },
         connect: function() {
             components.Button.prototype.connect.call(this);
-            this.fx_connection = engine.makeConnection(eu.group, "focused_effect", this.onFocusChange);
+            this.fx_connection = engine.makeConnection(eu.group, "focused_effect", this.onFocusChange.bind(this));
         },
         disconnect: function() {
             components.Button.prototype.disconnect.call(this);
@@ -405,7 +405,7 @@ MixtrackPlatinum.EffectUnit = function (unitNumbers) {
                     button.send(button.off);
                     button.flash_state = true;
                 }
-            });
+            }.bind(this));
         },
         stopFlash: function() {
             engine.stopTimer(this.flash_timer);
@@ -426,7 +426,7 @@ MixtrackPlatinum.EffectUnit = function (unitNumbers) {
                 engine.setValue(eu.group, "show_parameters", 1);
             }
         }
-    });
+    }.bind(this));
     this.show_focus_connection.trigger();
 
     this.touch_strip = new this.EffectUnitTouchStrip();
@@ -563,7 +563,7 @@ MixtrackPlatinum.Deck = function(number, midi_chan, effects_unit) {
         type: components.Button.prototype.types.toggle,
         connect: function() {
             components.Button.prototype.connect.call(this);
-            this.connections[1] = engine.makeConnection(this.group, this.outKey, MixtrackPlatinum.pflToggle);
+            this.connections[1] = engine.makeConnection(this.group, this.outKey, MixtrackPlatinum.pflToggle.bind(this));
         },
     });
 
diff --git a/res/controllers/Numark-N4-scripts.js b/res/controllers/Numark-N4-scripts.js
index 618f588fef3..f3387b3fd61 100644
--- a/res/controllers/Numark-N4-scripts.js
+++ b/res/controllers/Numark-N4-scripts.js
@@ -95,7 +95,7 @@ NumarkN4.init = function (id) {
   }
   // create xFader callbacks and trigger them to fill NumarkN4.storedCrossfaderParams
   _.forEach(NumarkN4.scratchXFader, function (value,control) {
-    var connectionObject = engine.makeConnection("[Mixer Profile]", control, NumarkN4.CrossfaderChangeCallback);
+    var connectionObject = engine.makeConnection("[Mixer Profile]", control, NumarkN4.CrossfaderChangeCallback.bind(this));
     connectionObject.trigger();
     NumarkN4.crossfaderCallbackConnections.push(connectionObject);
   });
@@ -231,7 +231,7 @@ NumarkN4.topContainer = function (channel) {
       this.timer = engine.beginTimer(1000, function () {
         theContainer.reconnectComponents();
         this.timer = 0;
-      }, true);
+      }.bind(this), true);
     },
     shift: function () {
       this.group=theContainer.group;
@@ -325,14 +325,14 @@ NumarkN4.MixerTemplate = function () {
         _.forEach(NumarkN4.scratchXFader, function (value, control){
           engine.setValue("[Mixer Profile]", control, value);
           NumarkN4.crossfaderCallbackConnections.push(
-            engine.makeConnection("[Mixer Profile]", control, NumarkN4.CrossfaderChangeCallback)
+            engine.makeConnection("[Mixer Profile]", control, NumarkN4.CrossfaderChangeCallback.bind(this))
           );
         });
       } else {
         _.forEach(NumarkN4.storedCrossfaderParams, function (value, control) {
           engine.setValue("[Mixer Profile]", control, value);
           NumarkN4.crossfaderCallbackConnections.push(
-            engine.makeConnection("[Mixer Profile]", control, NumarkN4.CrossfaderChangeCallback)
+            engine.makeConnection("[Mixer Profile]", control, NumarkN4.CrossfaderChangeCallback.bind(this))
           );
         });
       }
@@ -495,7 +495,7 @@ NumarkN4.Deck = function (channel) {
         }
         engine.beginTimer(100,function () {
           this.flickerSafetyTimeout=true;
-        },true);
+        }.bind(this),true);
       }
     },
   });
@@ -587,10 +587,10 @@ NumarkN4.Deck = function (channel) {
     // spawned which conflicted with the old (still running) timers.
     if (!this.previouslyLoaded) {
       //timer is more efficent is this case than a callback because it would be called too often.
-      theDeck.blinkTimer=engine.beginTimer(NumarkN4.blinkInterval,theDeck.manageChannelIndicator);
+      theDeck.blinkTimer=engine.beginTimer(NumarkN4.blinkInterval,theDeck.manageChannelIndicator.bind(theDeck));
     }
     this.previouslyLoaded=value;
-  });
+  }.bind(this));
   this.pitchBendMinus = new components.Button({
     midi: [0x90+channel,0x18,0xB0+channel,0x3D],
     key: "rate_temp_down",
diff --git a/res/controllers/Pioneer-DDJ-SB2-scripts.js b/res/controllers/Pioneer-DDJ-SB2-scripts.js
index 4ef3a410d04..0af28cb8d49 100644
--- a/res/controllers/Pioneer-DDJ-SB2-scripts.js
+++ b/res/controllers/Pioneer-DDJ-SB2-scripts.js
@@ -1189,5 +1189,5 @@ PioneerDDJSB2.EffectUnit = function (unitNumber) {
             var effectGroup = '[EffectRack1_EffectUnit' + unitNumber + '_Effect' + value + ']';
             engine.softTakeoverIgnoreNextValue(effectGroup, 'meta');
         }
-    });
+    }.bind(this));
 };