diff --git a/netwerk/sctp/datachannel/DataChannel.cpp b/netwerk/sctp/datachannel/DataChannel.cpp
index 5385c9e83219..48d1fc4db1a6 100644
--- a/netwerk/sctp/datachannel/DataChannel.cpp
+++ b/netwerk/sctp/datachannel/DataChannel.cpp
@@ -1778,7 +1778,7 @@ DataChannelConnection::HandleStreamResetEvent(const struct sctp_stream_reset_eve
 
           LOG(("Disconnected DataChannel %p from connection %p",
                (void *) channel.get(), (void *) channel->mConnection.get()));
-          channel->Destroy();
+          channel->DestroyLocked();
           // At this point when we leave here, the object is a zombie held alive only by the DOM object
         } else {
           LOG(("Can't find incoming channel %d",i));
@@ -2502,7 +2502,7 @@ DataChannelConnection::CloseInt(DataChannel *aChannel)
   aChannel->mState = CLOSING;
   if (mState == CLOSED) {
     // we're not going to hang around waiting
-    channel->Destroy();
+    channel->DestroyLocked();
   }
   // At this point when we leave here, the object is a zombie held alive only by the DOM object
 }
@@ -2556,13 +2556,15 @@ void
 DataChannel::Close()
 {
   ENSURE_DATACONNECTION;
+  RefPtr<DataChannelConnection> connection(mConnection);
   mConnection->Close(this);
 }
 
 // Used when disconnecting from the DataChannelConnection
 void
-DataChannel::Destroy()
+DataChannel::DestroyLocked()
 {
+  mConnection->mLock.AssertCurrentThreadOwns();
   ENSURE_DATACONNECTION;
 
   LOG(("Destroying Data channel %u", mStream));
diff --git a/netwerk/sctp/datachannel/DataChannel.h b/netwerk/sctp/datachannel/DataChannel.h
index 2ccdc48a835d..6386dbb498df 100644
--- a/netwerk/sctp/datachannel/DataChannel.h
+++ b/netwerk/sctp/datachannel/DataChannel.h
@@ -337,10 +337,11 @@ private:
   ~DataChannel();
 
 public:
-  void Destroy(); // when we disconnect from the connection after stream RESET
-
   NS_INLINE_DECL_THREADSAFE_REFCOUNTING(DataChannel)
 
+  // when we disconnect from the connection after stream RESET
+  void DestroyLocked();
+
   // Close this DataChannel.  Can be called multiple times.  MUST be called
   // before destroying the DataChannel (state must be CLOSED or CLOSING).
   void Close();