--- a/uriloader/prefetch/nsPrefetchService.cpp
+++ b/uriloader/prefetch/nsPrefetchService.cpp
@@ -1,8 +1,9 @@
+/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
 /* This Source Code Form is subject to the terms of the Mozilla Public
  * License, v. 2.0. If a copy of the MPL was not distributed with this
  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
 
 #include "nsPrefetchService.h"
 #include "nsICacheEntry.h"
 #include "nsIServiceManager.h"
 #include "nsICategoryManager.h"
@@ -180,25 +181,27 @@ nsPrefetchNode::OpenChannel()
 {
     nsCOMPtr<nsINode> source = do_QueryReferent(mSource);
     if (!source) {
         // Don't attempt to prefetch if we don't have a source node
         // (which should never happen).
         return NS_ERROR_FAILURE;
     }
     nsCOMPtr<nsILoadGroup> loadGroup = source->OwnerDoc()->GetDocumentLoadGroup();
-    nsresult rv = NS_NewChannel(getter_AddRefs(mChannel),
-                                mURI,
-                                nsContentUtils::GetSystemPrincipal(),
-                                nsILoadInfo::SEC_NORMAL,
-                                nsIContentPolicy::TYPE_OTHER,
-                                loadGroup, // aLoadGroup
-                                this,      // aCallbacks
-                                nsIRequest::LOAD_BACKGROUND |
-                                nsICachingChannel::LOAD_ONLY_IF_MODIFIED);
+    nsresult rv = NS_NewChannelInternal(getter_AddRefs(mChannel),
+                                        mURI,
+                                        source,
+                                        source->NodePrincipal(),
+                                        nullptr,   //aTriggeringPrincipal
+                                        nsILoadInfo::SEC_NORMAL,
+                                        nsIContentPolicy::TYPE_OTHER,
+                                        loadGroup, // aLoadGroup
+                                        this,      // aCallbacks
+                                        nsIRequest::LOAD_BACKGROUND |
+                                        nsICachingChannel::LOAD_ONLY_IF_MODIFIED);
 
     NS_ENSURE_SUCCESS(rv, rv);
 
     // configure HTTP specific stuff
     nsCOMPtr<nsIHttpChannel> httpChannel =
         do_QueryInterface(mChannel);
     if (httpChannel) {
         httpChannel->SetReferrer(mReferrerURI);