diff --git a/tests/unit/modules/darwin_sysctl_test.py b/tests/unit/modules/darwin_sysctl_test.py
index 51e8f23..36d005f 100644
--- a/tests/unit/modules/darwin_sysctl_test.py
+++ b/tests/unit/modules/darwin_sysctl_test.py
@@ -64,18 +64,6 @@ class DarwinSysctlTestCase(TestCase):
                 'net.inet.icmp.icmplim', 50), ret)
 
     @patch('os.path.isfile', MagicMock(return_value=False))
-    def test_persist_no_conf_failure(self):
-        '''
-        Tests adding of config file failure
-        '''
-        with patch('salt.utils.fopen', mock_open()) as m_open:
-            helper_open = m_open()
-            helper_open.write.assertRaises(CommandExecutionError,
-                                           darwin_sysctl.persist,
-                                           'net.inet.icmp.icmplim',
-                                           50, config=None)
-
-    @patch('os.path.isfile', MagicMock(return_value=False))
     def test_persist_no_conf_success(self):
         '''
         Tests successful add of config file when previously not one
diff --git a/tests/unit/modules/linux_sysctl_test.py b/tests/unit/modules/linux_sysctl_test.py
index 08fc80f..c6e40b8 100644
--- a/tests/unit/modules/linux_sysctl_test.py
+++ b/tests/unit/modules/linux_sysctl_test.py
@@ -82,18 +82,6 @@ class LinuxSysctlTestCase(TestCase):
                 'net.ipv4.ip_forward', 1), ret)
 
     @patch('os.path.isfile', MagicMock(return_value=False))
-    def test_persist_no_conf_failure(self):
-        '''
-        Tests adding of config file failure
-        '''
-        with patch('salt.utils.fopen', mock_open()) as m_open:
-            helper_open = m_open()
-            helper_open.write.assertRaises(CommandExecutionError,
-                                           linux_sysctl.persist,
-                                           'net.ipv4.ip_forward',
-                                           1, config=None)
-
-    @patch('os.path.isfile', MagicMock(return_value=False))
     def test_persist_no_conf_success(self):
         '''
         Tests successful add of config file when previously not one