diff --git a/murano/dsl/murano_type.py b/murano/dsl/murano_type.py
index bf434b155..90370f29c 100644
--- a/murano/dsl/murano_type.py
+++ b/murano/dsl/murano_type.py
@@ -280,9 +280,9 @@ class MuranoClass(dsl_types.MuranoClass, MuranoType, dslmeta.MetaProvider):
         for name in self.all_method_names:
             try:
                 yield self.find_single_method(name)
-            except exceptions.AmbiguousMethodName as e:
+            except exceptions.AmbiguousMethodName:
                 def func(*args, **kwargs):
-                    raise e
+                    raise
                 yield murano_method.MuranoMethod(
                     self, name, func, ephemeral=True)
 
diff --git a/murano/engine/system/workflowclient.py b/murano/engine/system/workflowclient.py
index 913d981f5..b300ec28b 100644
--- a/murano/engine/system/workflowclient.py
+++ b/murano/engine/system/workflowclient.py
@@ -53,7 +53,7 @@ class MistralClient(object):
     def _create_client(region):
         if not mistralcli:
             LOG.warning("Mistral client is not available")
-            raise mistral_import_error
+            raise ImportError("Import mistralcliet error")
 
         mistral_settings = CONF.mistral
 
diff --git a/murano/policy/model_policy_enforcer.py b/murano/policy/model_policy_enforcer.py
index 43e2c4eb9..c29538d2d 100644
--- a/murano/policy/model_policy_enforcer.py
+++ b/murano/policy/model_policy_enforcer.py
@@ -54,7 +54,7 @@ class ModelPolicyEnforcer(object):
     def _create_client(self):
         if not congress_client:
             # congress client was not imported
-            raise congress_client_import_error
+            raise ImportError("Import congresscliet error")
         return congress_client.Client(
             **auth_utils.get_session_client_parameters(
                 service_type='policy',