diff --git a/watcher/applier/actions/change_node_power_state.py b/watcher/applier/actions/change_node_power_state.py
index 431612b5f..703cb1c84 100644
--- a/watcher/applier/actions/change_node_power_state.py
+++ b/watcher/applier/actions/change_node_power_state.py
@@ -18,8 +18,7 @@
 #
 
 import enum
-import six
-import voluptuous
+import jsonschema
 
 from watcher._i18n import _
 from watcher.applier.actions import base
@@ -53,15 +52,29 @@ class ChangeNodePowerState(base.BaseAction):
 
     @property
     def schema(self):
-        return voluptuous.Schema({
-            voluptuous.Required(self.RESOURCE_ID):
-                voluptuous.All(
-                    voluptuous.Any(*six.string_types),
-                    voluptuous.Length(min=1)),
-            voluptuous.Required(self.STATE):
-                voluptuous.Any(*[NodeState.POWERON.value,
-                               NodeState.POWEROFF.value]),
-        })
+        return {
+            'type': 'object',
+            'properties': {
+                'resource_id': {
+                    'type': 'string',
+                    "minlength": 1
+                },
+                'state': {
+                    'type': 'string',
+                    'enum': [NodeState.POWERON.value,
+                             NodeState.POWEROFF.value]
+                }
+            },
+            'required': ['resource_id', 'state'],
+            'additionalProperties': False,
+        }
+
+    def validate_parameters(self):
+        try:
+            jsonschema.validate(self.input_parameters, self.schema)
+            return True
+        except jsonschema.ValidationError as e:
+            raise e
 
     @property
     def node_uuid(self):
diff --git a/watcher/tests/applier/actions/test_change_node_power_state.py b/watcher/tests/applier/actions/test_change_node_power_state.py
index bca0f21bb..ca6099595 100644
--- a/watcher/tests/applier/actions/test_change_node_power_state.py
+++ b/watcher/tests/applier/actions/test_change_node_power_state.py
@@ -15,8 +15,8 @@
 
 from __future__ import unicode_literals
 
+import jsonschema
 import mock
-import voluptuous
 
 from watcher.applier.actions import base as baction
 from watcher.applier.actions import change_node_power_state
@@ -59,34 +59,21 @@ class TestChangeNodePowerState(base.TestCase):
         self.action.input_parameters = {
             baction.BaseAction.RESOURCE_ID: COMPUTE_NODE,
             self.action.STATE: 'error'}
-        exc = self.assertRaises(
-            voluptuous.Invalid, self.action.validate_parameters)
-        self.assertEqual(
-            [(['state'], voluptuous.ScalarInvalid)],
-            [([str(p) for p in e.path], type(e)) for e in exc.errors])
+        self.assertRaises(jsonschema.ValidationError,
+                          self.action.validate_parameters)
 
     def test_parameters_resource_id_empty(self, mock_ironic, mock_nova):
         self.action.input_parameters = {
             self.action.STATE:
                 change_node_power_state.NodeState.POWERON.value,
         }
-        exc = self.assertRaises(
-            voluptuous.Invalid, self.action.validate_parameters)
-        self.assertEqual(
-            [(['resource_id'], voluptuous.RequiredFieldInvalid)],
-            [([str(p) for p in e.path], type(e)) for e in exc.errors])
+        self.assertRaises(jsonschema.ValidationError,
+                          self.action.validate_parameters)
 
     def test_parameters_applies_add_extra(self, mock_ironic, mock_nova):
         self.action.input_parameters = {"extra": "failed"}
-        exc = self.assertRaises(
-            voluptuous.Invalid, self.action.validate_parameters)
-        self.assertEqual(
-            sorted([(['resource_id'], voluptuous.RequiredFieldInvalid),
-                    (['state'], voluptuous.RequiredFieldInvalid),
-                    (['extra'], voluptuous.Invalid)],
-                   key=lambda x: str(x[0])),
-            sorted([([str(p) for p in e.path], type(e)) for e in exc.errors],
-                   key=lambda x: str(x[0])))
+        self.assertRaises(jsonschema.ValidationError,
+                          self.action.validate_parameters)
 
     def test_change_service_state_pre_condition(self, mock_ironic, mock_nova):
         try: