diff --git a/py/BUILD.bazel b/py/BUILD.bazel
index e2c03aded7960..013286070c2f1 100644
--- a/py/BUILD.bazel
+++ b/py/BUILD.bazel
@@ -328,6 +328,7 @@ py_test_suite(
     srcs = glob([
         "test/selenium/webdriver/common/**/*.py",
         "test/selenium/webdriver/marionette/**/*.py",
+        "test/selenium/webdriver/firefox/**/*.py",
         "test/selenium/webdriver/support/**/*.py",
     ]),
     args = [
diff --git a/py/test/selenium/webdriver/firefox/ff_profile_tests.py b/py/test/selenium/webdriver/firefox/ff_profile_tests.py
index 6e34504852c17..1d3932275f3e7 100755
--- a/py/test/selenium/webdriver/firefox/ff_profile_tests.py
+++ b/py/test/selenium/webdriver/firefox/ff_profile_tests.py
@@ -104,13 +104,6 @@ def test_that_boolean_prefs_are_written_in_the_correct_format():
     assert profile.default_preferences["sample.bool.preference"] is True
 
 
-def test_that_we_delete_the_profile(capabilities):
-    driver = Firefox(capabilities=capabilities)
-    path = driver.firefox_profile.path
-    driver.quit()
-    assert not os.path.exists(path)
-
-
 def test_profiles_do_not_share_preferences():
     profile1 = FirefoxProfile()
     profile1.accept_untrusted_certs = False
@@ -119,25 +112,6 @@ def test_profiles_do_not_share_preferences():
     assert profile2.default_preferences["webdriver_accept_untrusted_certs"] is True
 
 
-def test_add_extension_web_extension_with_id(capabilities, webserver):
-    current_directory = os.path.dirname(os.path.realpath(__file__))
-    root_directory = os.path.join(current_directory, '..', '..', '..', '..', '..')
-    # TODO: This file should probably live in a common directory.
-    extension_path = os.path.join(root_directory, 'javascript', 'node', 'selenium-webdriver',
-                                  'lib', 'test', 'data', 'firefox', 'webextension.xpi')
-
-    profile = FirefoxProfile()
-    profile.add_extension(extension_path)
-
-    driver = Firefox(capabilities=capabilities, firefox_profile=profile)
-    profile_path = driver.firefox_profile.path
-    extension_path_in_profile = os.path.join(profile_path, 'extensions', 'webextensions-selenium-example@example.com')
-    assert os.path.exists(extension_path_in_profile)
-    driver.get(webserver.where_is('simpleTest.html'))
-    driver.find_element(By.ID, 'webextensions-selenium-example')
-    driver.quit()
-
-
 def test_add_extension_web_extension_without_id(capabilities, webserver):
     current_directory = os.path.dirname(os.path.realpath(__file__))
     root_directory = os.path.join(current_directory, '..', '..', '..', '..', '..')