diff --git a/unit_tests/utilities/test_zaza_utilities_openstack.py b/unit_tests/utilities/test_zaza_utilities_openstack.py
index a6aa190..549ed71 100644
--- a/unit_tests/utilities/test_zaza_utilities_openstack.py
+++ b/unit_tests/utilities/test_zaza_utilities_openstack.py
@@ -581,21 +581,27 @@ class TestOpenStackUtils(ut_utils.BaseTestCase):
         nova_mock.keypairs.create.assert_called_once_with(name='mykeys')
 
     def test_get_private_key_file(self):
+        self.patch_object(openstack_utils.deployment_env, 'get_tmpdir',
+                          return_value='/tmp/zaza-model1')
         self.assertEqual(
             openstack_utils.get_private_key_file('mykeys'),
-            'tests/id_rsa_mykeys')
+            '/tmp/zaza-model1/id_rsa_mykeys')
 
     def test_write_private_key(self):
+        self.patch_object(openstack_utils.deployment_env, 'get_tmpdir',
+                          return_value='/tmp/zaza-model1')
         m = mock.mock_open()
         with mock.patch(
             'zaza.openstack.utilities.openstack.open', m, create=False
         ):
             openstack_utils.write_private_key('mykeys', 'keycontents')
-        m.assert_called_once_with('tests/id_rsa_mykeys', 'w')
+        m.assert_called_once_with('/tmp/zaza-model1/id_rsa_mykeys', 'w')
         handle = m()
         handle.write.assert_called_once_with('keycontents')
 
     def test_get_private_key(self):
+        self.patch_object(openstack_utils.deployment_env, 'get_tmpdir',
+                          return_value='/tmp/zaza-model1')
         self.patch_object(openstack_utils.os.path, "isfile",
                           return_value=True)
         m = mock.mock_open(read_data='myprivkey')
@@ -607,6 +613,8 @@ class TestOpenStackUtils(ut_utils.BaseTestCase):
                 'myprivkey')
 
     def test_get_private_key_file_missing(self):
+        self.patch_object(openstack_utils.deployment_env, 'get_tmpdir',
+                          return_value='/tmp/zaza-model1')
         self.patch_object(openstack_utils.os.path, "isfile",
                           return_value=False)
         self.assertIsNone(openstack_utils.get_private_key('mykeys'))
diff --git a/zaza/openstack/utilities/openstack.py b/zaza/openstack/utilities/openstack.py
index 28ba29a..034cae3 100644
--- a/zaza/openstack/utilities/openstack.py
+++ b/zaza/openstack/utilities/openstack.py
@@ -2202,7 +2202,8 @@ def get_private_key_file(keypair_name):
     :returns: Path to file containing key
     :rtype: str
     """
-    return 'tests/id_rsa_{}'.format(keypair_name)
+    tmp_dir = deployment_env.get_tmpdir()
+    return '{}/id_rsa_{}'.format(tmp_dir, keypair_name)
 
 
 def write_private_key(keypair_name, key):