diff --git a/tests/test_connection.py b/tests/test_connection.py
index db60384..c92e088 100644
--- a/tests/test_connection.py
+++ b/tests/test_connection.py
@@ -1,5 +1,7 @@
 """Connection test module."""
 
+from inspect import signature
+
 import pytest
 
 from keycloak.connection import ConnectionManager
@@ -65,3 +67,6 @@ def test_counter_part():
     for method in sync_methods:
         async_method = method[2:]
         assert (async_method in con_methods) is True
+        sync_sign = signature(getattr(ConnectionManager, method))
+        async_sign = signature(getattr(ConnectionManager, async_method))
+        assert sync_sign.parameters == async_sign.parameters
diff --git a/tests/test_keycloak_admin.py b/tests/test_keycloak_admin.py
index 0f4eb57..d7c8bc4 100644
--- a/tests/test_keycloak_admin.py
+++ b/tests/test_keycloak_admin.py
@@ -3,6 +3,7 @@
 import copy
 import os
 import uuid
+from inspect import signature
 from typing import Tuple
 
 import freezegun
@@ -6160,3 +6161,6 @@ def test_counter_part():
     for method in sync_methods:
         async_method = f"a_{method}"
         assert (async_method in admin_methods) is True
+        sync_sign = signature(getattr(KeycloakAdmin, method))
+        async_sign = signature(getattr(KeycloakAdmin, async_method))
+        assert sync_sign.parameters == async_sign.parameters
diff --git a/tests/test_keycloak_openid.py b/tests/test_keycloak_openid.py
index f05fbd7..56d0885 100644
--- a/tests/test_keycloak_openid.py
+++ b/tests/test_keycloak_openid.py
@@ -1,5 +1,6 @@
 """Test module for KeycloakOpenID."""
 
+from inspect import signature
 from typing import Tuple
 from unittest import mock
 
@@ -987,3 +988,6 @@ def test_counter_part():
     for method in sync_methods:
         async_method = f"a_{method}"
         assert (async_method in openid_methods) is True
+        sync_sign = signature(getattr(KeycloakOpenID, method))
+        async_sign = signature(getattr(KeycloakOpenID, async_method))
+        assert sync_sign.parameters == async_sign.parameters
diff --git a/tests/test_keycloak_uma.py b/tests/test_keycloak_uma.py
index 13e49ad..462b7cb 100644
--- a/tests/test_keycloak_uma.py
+++ b/tests/test_keycloak_uma.py
@@ -1,6 +1,7 @@
 """Test module for KeycloakUMA."""
 
 import re
+from inspect import signature
 
 import pytest
 
@@ -613,3 +614,6 @@ def test_counter_part():
     for method in sync_methods:
         async_method = f"a_{method}"
         assert (async_method in uma_methods) is True
+        sync_sign = signature(getattr(KeycloakUMA, method))
+        async_sign = signature(getattr(KeycloakUMA, async_method))
+        assert sync_sign.parameters == async_sign.parameters