--- a/dom/webidl/RTCPeerConnection.webidl
+++ b/dom/webidl/RTCPeerConnection.webidl
@@ -54,20 +54,16 @@ dictionary RTCOfferAnswerOptions {
 
 dictionary RTCAnswerOptions : RTCOfferAnswerOptions {
 };
 
 dictionary RTCOfferOptions : RTCOfferAnswerOptions {
   long    offerToReceiveVideo;
   long    offerToReceiveAudio;
   boolean iceRestart = false;
-
-  // Mozilla proprietary options (at risk: Bug 1196974)
-  boolean mozDontOfferDataChannel;
-  boolean mozBundleOnly;
 };
 
 interface RTCDataChannel;
 
 [Pref="media.peerconnection.enabled",
  JSImplementation="@mozilla.org/dom/peerconnection;1",
  Constructor (optional RTCConfiguration configuration,
               optional object? constraints)]