diff --git a/content/base/src/nsFrameLoader.cpp b/content/base/src/nsFrameLoader.cpp
index 22fbdfe8c3d6..ab75a23afbd9 100644
--- a/content/base/src/nsFrameLoader.cpp
+++ b/content/base/src/nsFrameLoader.cpp
@@ -1154,7 +1154,7 @@ nsFrameLoader::TryNewProcess()
     return PR_FALSE;
   }
 
-  if (!mOwnerContent->IsNodeOfType(nsINode::eXUL)) {
+  if (!mOwnerContent->IsXUL()) {
     return PR_FALSE;
   }