diff --git a/aodh/api/controllers/v2/base.py b/aodh/api/controllers/v2/base.py
index fd1b49fa4..5e152c6d3 100644
--- a/aodh/api/controllers/v2/base.py
+++ b/aodh/api/controllers/v2/base.py
@@ -21,6 +21,7 @@
 import ast
 import datetime
 import functools
+import inspect
 
 from oslo_utils import strutils
 from oslo_utils import timeutils
@@ -29,7 +30,6 @@ import wsme
 from wsme import types as wtypes
 
 from aodh.i18n import _
-from aodh.utils import get_func_valid_keys
 
 
 operation_kind = ('lt', 'le', 'eq', 'ne', 'ge', 'gt')
@@ -87,7 +87,7 @@ class Base(wtypes.DynamicBase):
         return cls(links=links, **(m.as_dict()))
 
     def as_dict(self, db_model):
-        valid_keys = get_func_valid_keys(db_model.__init__)
+        valid_keys = inspect.getfullargspec(db_model.__init__)[0]
         if 'self' in valid_keys:
             valid_keys.remove('self')
         return self.as_dict_from_keys(valid_keys)
diff --git a/aodh/api/controllers/v2/utils.py b/aodh/api/controllers/v2/utils.py
index 8923f404e..ebf8a9ce8 100644
--- a/aodh/api/controllers/v2/utils.py
+++ b/aodh/api/controllers/v2/utils.py
@@ -20,6 +20,7 @@
 
 import copy
 import datetime
+import inspect
 
 from oslo_utils import timeutils
 import pecan
@@ -28,7 +29,6 @@ import wsme
 
 from aodh.api.controllers.v2 import base
 from aodh.api import rbac
-from aodh.utils import get_func_valid_keys
 
 
 def get_auth_project(on_behalf_of=None):
@@ -63,7 +63,7 @@ def sanitize_query(query, db_func, on_behalf_of=None):
         _verify_query_segregation(q, auth_project)
 
         proj_q = [i for i in q if i.field == 'project_id']
-        valid_keys = get_func_valid_keys(db_func)
+        valid_keys = inspect.getfullargspec(db_func)[0]
         if not proj_q and 'on_behalf_of' not in valid_keys:
             # The user is restricted, but they didn't specify a project
             # so add it for them.
@@ -112,7 +112,7 @@ def validate_query(query, db_func, internal_keys=None,
     internal_keys = internal_keys or []
     _verify_query_segregation(query)
 
-    valid_keys = get_func_valid_keys(db_func)
+    valid_keys = inspect.getfullargspec(db_func)[0]
     if 'alarm_type' in valid_keys:
         valid_keys.remove('alarm_type')
         valid_keys.append('type')
diff --git a/aodh/storage/base.py b/aodh/storage/base.py
index a095379cd..edef4dd50 100644
--- a/aodh/storage/base.py
+++ b/aodh/storage/base.py
@@ -15,9 +15,9 @@
 """Base classes for storage engines
 """
 import copy
+import inspect
 
 import aodh
-from aodh.utils import get_func_valid_keys
 
 
 def update_nested(original_dict, updates):
@@ -62,7 +62,7 @@ class Model:
 
     @classmethod
     def get_field_names(cls):
-        fields = get_func_valid_keys(cls.__init__)
+        fields = inspect.getfullargspec(cls.__init__)[0]
         return set(fields) - {"self"}
 
 
diff --git a/aodh/utils.py b/aodh/utils.py
deleted file mode 100644
index 20fdc91eb..000000000
--- a/aodh/utils.py
+++ /dev/null
@@ -1,18 +0,0 @@
-#  Copyright 2019 - Nokia Corporation
-#
-#  Licensed under the Apache License, Version 2.0 (the "License"); you may
-#  not use this file except in compliance with the License. You may obtain
-#  a copy of the License at
-#
-#  http://www.apache.org/licenses/LICENSE-2.0
-#
-#  Unless required by applicable law or agreed to in writing, software
-#  distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
-#  WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
-#  License for the specific language governing permissions and limitations
-#  under the License.
-import inspect
-
-
-def get_func_valid_keys(func):
-    return inspect.getfullargspec(func)[0]