--- a/testing/marionette/harness/marionette_harness/tests/unit/test_window_close_content.py
+++ b/testing/marionette/harness/marionette_harness/tests/unit/test_window_close_content.py
@@ -56,16 +56,17 @@ class TestCloseWindow(WindowManagerMixin
     def test_close_window_for_browser_tab(self):
         tab = self.open_tab()
         self.marionette.switch_to_window(tab)
 
         window_handles = self.marionette.close()
         self.assertNotIn(tab, window_handles)
         self.assertListEqual(self.start_tabs, window_handles)
 
+    @skip_if_mobile("Interacting with chrome windows not available for Fennec")
     def test_close_window_for_browser_window_with_single_tab(self):
         win = self.open_window()
         self.marionette.switch_to_window(win)
 
         self.assertEqual(len(self.start_tabs) + 1, len(self.marionette.window_handles))
         window_handles = self.marionette.close()
         self.assertNotIn(win, window_handles)
         self.assertListEqual(self.start_tabs, window_handles)