diff --git a/dom/bindings/Bindings.conf b/dom/bindings/Bindings.conf
index 3aa2d0c1e68..c944b3d5803 100644
--- a/dom/bindings/Bindings.conf
+++ b/dom/bindings/Bindings.conf
@@ -187,7 +187,7 @@ DOMInterfaces = {
 
 'CanvasRenderingContext2D': {
     'implicitJSContext': [
-        'createImageData', 'getImageData', 'mozDash'
+        'createImageData', 'getImageData'
     ],
     'resultNotAddRefed': [ 'canvas', 'measureText' ],
     'binaryNames': {
@@ -844,7 +844,6 @@ DOMInterfaces = {
 
 'OfflineAudioContext': {
     'nativeType': 'mozilla::dom::AudioContext',
-    'implicitJSContext': [ 'createBuffer' ],
     'resultNotAddRefed': [ 'destination', 'listener' ],
 },
 
@@ -1246,7 +1245,6 @@ DOMInterfaces = {
     'nativeOwnership': 'refcounted',
 },
 {
-    'implicitJSContext': [ 'createObjectURL', 'revokeObjectURL' ],
     'workers': True,
 }],