--- a/dom/base/Location.cpp
+++ b/dom/base/Location.cpp
@@ -571,19 +571,20 @@ Location::GetOrigin(nsAString& aOrigin)
 }
 
 NS_IMETHODIMP
 Location::GetPathname(nsAString& aPathname)
 {
   aPathname.Truncate();
 
   nsCOMPtr<nsIURI> uri;
-  nsresult result = NS_OK;
-
-  result = GetURI(getter_AddRefs(uri));
+  nsresult result = GetURI(getter_AddRefs(uri));
+  if (NS_FAILED(result) || !uri) {
+    return result;
+  }
 
   nsAutoCString file;
 
   result = uri->GetFilePath(file);
 
   if (NS_SUCCEEDED(result)) {
     AppendUTF8toUTF16(file, aPathname);
   }