diff --git a/dom/security/nsContentSecurityManager.cpp b/dom/security/nsContentSecurityManager.cpp
index 4ee9b48777..570730312b 100644
--- a/dom/security/nsContentSecurityManager.cpp
+++ b/dom/security/nsContentSecurityManager.cpp
@@ -303,7 +303,7 @@ DoContentSecurityChecks(nsIChannel* aChannel, nsILoadInfo* aLoadInfo)
 
     case nsIContentPolicy::TYPE_DOCUMENT: {
       mimeTypeGuess = EmptyCString();
-      requestingContext = aLoadInfo->LoadingNode();
+      requestingContext = aLoadInfo->ContextForTopLevelLoad();
       break;
     }