1 files changed, 1 insertions, 1 deletions
diff --git a/toolkit/components/pdfjs/test/browser_pdfjs_download_button.js b/toolkit/components/pdfjs/test/browser_pdfjs_download_button.js
index 1e3c00620c..1470d80f0e 100644
--- a/toolkit/components/pdfjs/test/browser_pdfjs_download_button.js
+++ b/toolkit/components/pdfjs/test/browser_pdfjs_download_button.js
@@ -7,7 +7,7 @@ const RELATIVE_DIR = "toolkit/components/pdfjs/test/";
 const TESTROOT = "https://example.com/browser/" + RELATIVE_DIR;
 
 var MockFilePicker = SpecialPowers.MockFilePicker;
-MockFilePicker.init(window);
+MockFilePicker.init(window.browsingContext);
 MockFilePicker.returnValue = MockFilePicker.returnOK;
 
 var tempDir;