diff --git a/tripleo_common/tests/utils/test_config.py b/tripleo_common/tests/utils/test_config.py
index 12a8171ae..167510446 100644
--- a/tripleo_common/tests/utils/test_config.py
+++ b/tripleo_common/tests/utils/test_config.py
@@ -70,6 +70,9 @@ class TestConfig(base.TestCase):
                 elif config == 'step_config':
                     expected_calls += [call('/tmp/tht/%s/%s.pp' %
                                             (role, config))]
+                elif config == 'param_config':
+                    expected_calls += [call('/tmp/tht/%s/%s.json' %
+                                            (role, config))]
                 else:
                     expected_calls += [call('/tmp/tht/%s/%s.yaml' %
                                             (role, config))]
@@ -608,6 +611,9 @@ class TestConfig(base.TestCase):
                 elif config == 'step_config':
                     expected_calls += [call('/tmp/tht/%s/%s.pp' %
                                             (role, config))]
+                elif config == 'param_config':
+                    expected_calls += [call('/tmp/tht/%s/%s.json' %
+                                            (role, config))]
                 else:
                     expected_calls += [call('/tmp/tht/%s/%s.yaml' %
                                             (role, config))]
diff --git a/tripleo_common/utils/config.py b/tripleo_common/utils/config.py
index 63fb3fd8b..1f0b49749 100644
--- a/tripleo_common/utils/config.py
+++ b/tripleo_common/utils/config.py
@@ -213,6 +213,10 @@ class Config(object):
                     filepath = os.path.join(role_path, 'step_config.pp')
                     with self._open_file(filepath) as step_config:
                         step_config.write(role[config])
+                elif config == 'param_config':
+                    filepath = os.path.join(role_path, 'param_config.json')
+                    with self._open_file(filepath) as param_config:
+                        param_config.write(json.dumps(role[config]))
                 elif config == 'ansible_group_vars':
                     # NOTE(aschultz): ansible group vars are for specific role
                     # services so we merge them in with the others so they