1 files changed, 1 insertions, 1 deletions
diff --git a/toolkit/mozapps/downloads/tests/browser/browser_save_wrongextension.js b/toolkit/mozapps/downloads/tests/browser/browser_save_wrongextension.js
index 83e668076a..ad83bb3689 100644
--- a/toolkit/mozapps/downloads/tests/browser/browser_save_wrongextension.js
+++ b/toolkit/mozapps/downloads/tests/browser/browser_save_wrongextension.js
@@ -8,7 +8,7 @@ let url =
   "data:text/html,<a id='link' href='http://localhost:8000/thefile.js'>Link</a>";
 
 let MockFilePicker = SpecialPowers.MockFilePicker;
-MockFilePicker.init(window);
+MockFilePicker.init(window.browsingContext);
 
 let httpServer = null;