--- a/netwerk/base/src/nsIOService.cpp
+++ b/netwerk/base/src/nsIOService.cpp
@@ -679,17 +679,21 @@ nsIOService::NewChannelFromURIWithProxyF
     if (aLoadInfo && newChannel2Succeeded) {
       // Make sure that all the individual protocolhandlers attach
       // a loadInfo within it's implementation of ::newChannel2().
       // Once Bug 1087720 lands, we should remove the surrounding
       // if-clause here and always assert that we indeed have a
       // loadinfo on the newly created channel.
       nsCOMPtr<nsILoadInfo> loadInfo;
       (*result)->GetLoadInfo(getter_AddRefs(loadInfo));
-      MOZ_ASSERT(loadInfo);
+      // make sure we have the same instance of loadInfo on the newly created channel
+      if (aLoadInfo != loadInfo) {
+        MOZ_ASSERT(false, "newly created channel must have a loadinfo attached");
+        return NS_ERROR_UNEXPECTED;
+      }
 
       // If we're sandboxed, make sure to clear any owner the channel
       // might already have.
       if (loadInfo->GetLoadingSandboxed()) {
         (*result)->SetOwner(nullptr);
       }
     }
 

--- a/netwerk/test/unit/test_about_protocol.js
+++ b/netwerk/test/unit/test_about_protocol.js
@@ -5,25 +5,19 @@
 let Ci = Components.interfaces;
 let Cc = Components.classes;
 
 Components.utils.import("resource://gre/modules/Services.jsm");
 Components.utils.import("resource://gre/modules/XPCOMUtils.jsm");
 
 let unsafeAboutModule = {
   QueryInterface: XPCOMUtils.generateQI([Ci.nsIAboutModule]),
-  newChannel: function (aURI) {
-    let chan = Services.io.newChannel2("about:blank",
-                                       null,
-                                       null,
-                                       null,      // aLoadingNode
-                                       Services.scriptSecurityManager.getSystemPrincipal(),
-                                       null,      // aTriggeringPrincipal
-                                       Ci.nsILoadInfo.SEC_NORMAL,
-                                       Ci.nsIContentPolicy.TYPE_OTHER);
+  newChannel: function (aURI, aLoadInfo) {
+    var uri = Services.io.newURI("about:blank", null, null);
+    let chan = Services.io.newChannelFromURIWithLoadInfo(uri, aLoadInfo);
     chan.owner = Services.scriptSecurityManager.getSystemPrincipal();
     return chan;
   },
   getURIFlags: function (aURI) {
     return Ci.nsIAboutModule.URI_SAFE_FOR_UNTRUSTED_CONTENT;
   }
 };