1 files changed, 1 insertions, 1 deletions
diff --git a/browser/components/migration/tests/browser/browser_file_migration.js b/browser/components/migration/tests/browser/browser_file_migration.js
index 04241d29d5..c73dfc4456 100644
--- a/browser/components/migration/tests/browser/browser_file_migration.js
+++ b/browser/components/migration/tests/browser/browser_file_migration.js
@@ -68,7 +68,7 @@ add_setup(async () => {
   // We use MockFilePicker to simulate a native file picker, and prepare it
   // to return a dummy file pointed at TEST_FILE_PATH. The file at
   // TEST_FILE_PATH is not required (nor expected) to exist.
-  MockFilePicker.init(window);
+  MockFilePicker.init(window.browsingContext);
   registerCleanupFunction(() => {
     MockFilePicker.cleanup();
   });