diff --git a/tripleoclient/tests/workflows/test_parameters.py b/tripleoclient/tests/workflows/test_parameters.py
index bbbcd8933..e4491eaab 100644
--- a/tripleoclient/tests/workflows/test_parameters.py
+++ b/tripleoclient/tests/workflows/test_parameters.py
@@ -107,10 +107,11 @@ class TestParameterWorkflows(utils.TestCommand):
                 workdir=mock.ANY,
                 playbook_dir=mock.ANY,
                 verbosity=0,
+                extra_vars_file={
+                    'tripleo_get_flatten_params': {
+                        'stack_data': mock.ANY},
+                    'tripleo_role_list': {'roles': mock.ANY}},
                 extra_vars={'num_phy_cores_per_numa_node_for_pmd': 2,
-                            'tripleo_get_flatten_params': {
-                                'stack_data': mock.ANY},
-                            'tripleo_role_list': mock.ANY,
                             'derived_environment_path': mock.ANY}
             )
         ]
@@ -153,10 +154,11 @@ class TestParameterWorkflows(utils.TestCommand):
                 workdir=mock.ANY,
                 playbook_dir=mock.ANY,
                 verbosity=0,
+                extra_vars_file={
+                    'tripleo_get_flatten_params': {
+                        'stack_data': mock.ANY},
+                    'tripleo_role_list': {'roles': mock.ANY}},
                 extra_vars={'num_phy_cores_per_numa_node_for_pmd': 2,
-                            'tripleo_get_flatten_params': {
-                                'stack_data': mock.ANY},
-                            'tripleo_role_list': mock.ANY,
                             'derived_environment_path': mock.ANY}
             ),
             mock.call(
@@ -165,10 +167,11 @@ class TestParameterWorkflows(utils.TestCommand):
                 workdir=mock.ANY,
                 playbook_dir='/playbook/dir-1',
                 verbosity=0,
+                extra_vars_file={
+                    'tripleo_get_flatten_params': {
+                        'stack_data': mock.ANY},
+                    'tripleo_role_list': {'roles': mock.ANY}},
                 extra_vars={'some_opt': 0,
-                            'tripleo_get_flatten_params': {
-                                'stack_data': mock.ANY},
-                            'tripleo_role_list': mock.ANY,
                             'derived_environment_path': mock.ANY}
             )
         ]
diff --git a/tripleoclient/workflows/parameters.py b/tripleoclient/workflows/parameters.py
index d9ecd7905..0723e9282 100644
--- a/tripleoclient/workflows/parameters.py
+++ b/tripleoclient/workflows/parameters.py
@@ -61,8 +61,9 @@ def invoke_plan_env_workflows(clients, stack_name, plan_env_file,
                     pb_vars
                 )
             )
-            pb_vars['tripleo_get_flatten_params'] = {'stack_data': stack_data}
-            pb_vars['tripleo_role_list'] = role_list
+            pb_vars_file = {'tripleo_get_flatten_params': {
+               'stack_data': stack_data}, 'tripleo_role_list': {
+                   'roles': role_list}}
             pb_vars['derived_environment_path'] = derived_environment_path
             playbook_dir = os.path.dirname(pb)
             if not playbook_dir:
@@ -74,7 +75,8 @@ def invoke_plan_env_workflows(clients, stack_name, plan_env_file,
                 workdir=tmp,
                 playbook_dir=playbook_dir,
                 verbosity=verbosity,
-                extra_vars=pb_vars
+                extra_vars=pb_vars,
+                extra_vars_file=pb_vars_file
             )