1 files changed, 1 insertions, 1 deletions
diff --git a/browser/components/preferences/tests/browser_cert_export.js b/browser/components/preferences/tests/browser_cert_export.js
index 48769f84e6..f37cdec767 100644
--- a/browser/components/preferences/tests/browser_cert_export.js
+++ b/browser/components/preferences/tests/browser_cert_export.js
@@ -78,7 +78,7 @@ async function checkCertExportWorks(
 ) {
   MockFilePicker.displayDirectory = destDir;
   var destFile = destDir.clone();
-  MockFilePicker.init(window);
+  MockFilePicker.init(window.browsingContext);
   MockFilePicker.filterIndex = exportType;
   MockFilePicker.showCallback = function (fp) {
     info("showCallback");