diff --git a/dom/base/test/fullscreen/browser.ini b/dom/base/test/fullscreen/browser.ini
index 19d9cf4af446..a11032037e62 100644
--- a/dom/base/test/fullscreen/browser.ini
+++ b/dom/base/test/fullscreen/browser.ini
@@ -37,5 +37,7 @@ support-files =
   file_fullscreen-bug-1798219.html
   file_fullscreen-bug-1798219-2.html
 [browser_fullscreen-window-open-race.js]
+skip-if =
+  os == 'mac' # test is checking for synchronous fullscreen completion
 [browser_fullscreen-sizemode.js]
 [browser_fullscreen_exit_on_external_protocol.js]