1 files changed, 3 insertions, 3 deletions
diff --git a/testing/specialpowers/content/MockFilePicker.sys.mjs b/testing/specialpowers/content/MockFilePicker.sys.mjs
index ee2f11af75..0ce8c25d4e 100644
--- a/testing/specialpowers/content/MockFilePicker.sys.mjs
+++ b/testing/specialpowers/content/MockFilePicker.sys.mjs
@@ -48,11 +48,11 @@ export var MockFilePicker = {
   window: null,
   pendingPromises: [],
 
-  init(window) {
-    this.window = window;
+  init(browsingContext) {
+    this.window = browsingContext.window;
 
     this.reset();
-    this.factory = newFactory(window);
+    this.factory = newFactory(this.window);
     if (!registrar.isCIDRegistered(newClassID)) {
       oldClassID = registrar.contractIDToCID(CONTRACT_ID);
       registrar.registerFactory(newClassID, "", CONTRACT_ID, this.factory);