diff --git a/watcher/applier/actions/base.py b/watcher/applier/actions/base.py
index 8bb8bfb03..ec1cb5d82 100644
--- a/watcher/applier/actions/base.py
+++ b/watcher/applier/actions/base.py
@@ -18,6 +18,7 @@
 
 import abc
 
+import jsonschema
 import six
 
 from watcher.common import clients
@@ -130,8 +131,11 @@ class BaseAction(loadable.Loadable):
         raise NotImplementedError()
 
     def validate_parameters(self):
-        self.schema(self.input_parameters)
-        return True
+        try:
+            jsonschema.validate(self.input_parameters, self.schema)
+            return True
+        except jsonschema.ValidationError as e:
+            raise e
 
     @abc.abstractmethod
     def get_description(self):
diff --git a/watcher/applier/actions/change_node_power_state.py b/watcher/applier/actions/change_node_power_state.py
index 703cb1c84..1a085e95e 100644
--- a/watcher/applier/actions/change_node_power_state.py
+++ b/watcher/applier/actions/change_node_power_state.py
@@ -18,7 +18,6 @@
 #
 
 import enum
-import jsonschema
 
 from watcher._i18n import _
 from watcher.applier.actions import base
@@ -69,13 +68,6 @@ class ChangeNodePowerState(base.BaseAction):
             '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):
         return self.resource_id
diff --git a/watcher/applier/actions/change_nova_service_state.py b/watcher/applier/actions/change_nova_service_state.py
index 5082651e7..a2d9792a1 100644
--- a/watcher/applier/actions/change_nova_service_state.py
+++ b/watcher/applier/actions/change_nova_service_state.py
@@ -17,8 +17,6 @@
 # limitations under the License.
 #
 
-import jsonschema
-
 from watcher._i18n import _
 from watcher.applier.actions import base
 from watcher.common import exception
@@ -69,13 +67,6 @@ class ChangeNovaServiceState(base.BaseAction):
             '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 host(self):
         return self.resource_id
diff --git a/watcher/applier/actions/migration.py b/watcher/applier/actions/migration.py
index 6e6c26a3a..9763c3e6e 100644
--- a/watcher/applier/actions/migration.py
+++ b/watcher/applier/actions/migration.py
@@ -18,7 +18,6 @@
 #
 
 
-import jsonschema
 from oslo_log import log
 from watcher._i18n import _
 from watcher.applier.actions import base
@@ -91,13 +90,6 @@ class Migrate(base.BaseAction):
             '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 instance_uuid(self):
         return self.resource_id
diff --git a/watcher/applier/actions/nop.py b/watcher/applier/actions/nop.py
index 1372fa9d2..3bd9220d9 100644
--- a/watcher/applier/actions/nop.py
+++ b/watcher/applier/actions/nop.py
@@ -17,7 +17,6 @@
 # limitations under the License.
 #
 
-import jsonschema
 from oslo_log import log
 
 from watcher.applier.actions import base
@@ -52,13 +51,6 @@ class Nop(base.BaseAction):
             '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 message(self):
         return self.input_parameters.get(self.MESSAGE)
diff --git a/watcher/applier/actions/resize.py b/watcher/applier/actions/resize.py
index 862dcec60..561e545ec 100644
--- a/watcher/applier/actions/resize.py
+++ b/watcher/applier/actions/resize.py
@@ -17,7 +17,6 @@
 # limitations under the License.
 #
 
-import jsonschema
 from oslo_log import log
 
 from watcher.applier.actions import base
@@ -67,13 +66,6 @@ class Resize(base.BaseAction):
                 '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 instance_uuid(self):
         return self.resource_id
diff --git a/watcher/applier/actions/sleep.py b/watcher/applier/actions/sleep.py
index d4928e663..5865c221d 100644
--- a/watcher/applier/actions/sleep.py
+++ b/watcher/applier/actions/sleep.py
@@ -17,7 +17,6 @@
 # limitations under the License.
 #
 
-import jsonschema
 import time
 
 from oslo_log import log
@@ -54,13 +53,6 @@ class Sleep(base.BaseAction):
             '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 duration(self):
         return int(self.input_parameters.get(self.DURATION))