diff --git a/tacker/tests/unit/vnflcm/test_vnflcm_driver.py b/tacker/tests/unit/vnflcm/test_vnflcm_driver.py
index 5cbc2b2a6..801523296 100644
--- a/tacker/tests/unit/vnflcm/test_vnflcm_driver.py
+++ b/tacker/tests/unit/vnflcm/test_vnflcm_driver.py
@@ -1871,6 +1871,8 @@ class TestVnflcmDriver(db_base.SqlTestCase):
         mock_invoke.side_effect = [
             # Kubernetes.get_scale_in_ids called in _scale_vnf_pre()
             [[], [], None, None],
+            # MgmtDriver called in scale_start()
+            None,
             # Kubernetes.scale called in scale()
             None,
             # Kubernetes.scale_wait called in scale()
diff --git a/tacker/vnflcm/vnflcm_driver.py b/tacker/vnflcm/vnflcm_driver.py
index 3cbd8b1ac..028e59b26 100644
--- a/tacker/vnflcm/vnflcm_driver.py
+++ b/tacker/vnflcm/vnflcm_driver.py
@@ -892,7 +892,8 @@ class VnfLcmDriver(abstract_driver.VnfInstanceAbstractDriver):
                 # passed from conductor to vnflcm_driver, thus we put Null
                 # value to grant and grant_reqeust temporary.
                 # This part will be updated in next release.
-                if len(scale_id_list) != 0:
+                if len(scale_id_list) != 0 or \
+                        vim_connection_info.vim_type == 'kubernetes':
                     kwargs = {'scale_name_list': scale_name_list}
                     self._mgmt_manager.invoke(
                         self._load_vnf_interface(
@@ -956,7 +957,8 @@ class VnfLcmDriver(abstract_driver.VnfInstanceAbstractDriver):
                 # passed from conductor to vnflcm_driver, thus we put Null
                 # value to grant and grant_reqeust temporary.
                 # This part will be updated in next release.
-                if len(id_list) != 0:
+                if len(id_list) != 0 or \
+                        vim_connection_info.vim_type == 'kubernetes':
                     kwargs = {'scale_out_id_list': id_list}
                     self._mgmt_manager.invoke(
                         self._load_vnf_interface(