diff --git a/src/controllers/admin/user.py b/src/controllers/admin/user.py
index efb75bf..db5f595 100644
--- a/src/controllers/admin/user.py
+++ b/src/controllers/admin/user.py
@@ -45,9 +45,9 @@ def update_user(user_id, payload, db):
         user.update({"email": payload.email})
     if payload.password:
         user.update({"password": get_password_hash(payload.password)})
-    if payload.is_admin != None:
+    if payload.is_admin is not None:
         user.update({"is_admin": payload.is_admin})
-    if payload.disabled != None:
+    if payload.disabled is not None:
         User.disabled = user.disabled
         user.update({"disabled": payload.disabled})
         
diff --git a/src/controllers/user/user.py b/src/controllers/user/user.py
index 01c6fc0..23563e7 100644
--- a/src/controllers/user/user.py
+++ b/src/controllers/user/user.py
@@ -7,9 +7,9 @@
 from utils.variables import is_not_empty
 
 def register(payload, db):
-    if (validate_email(payload.email) == False):
+    if (validate_email(payload.email) is False):
         raise HTTPException(status_code=status.HTTP_400_BAD_REQUEST, detail="Invalid email")
-    if (validate_password(payload.password) == False):
+    if (validate_password(payload.password) is False):
         raise HTTPException(status_code=status.HTTP_400_BAD_REQUEST, detail="Invalid password")
     user = db.query(User).filter(User.email == payload.email).first()
     if user:
diff --git a/src/integration_tests/test_admin_user.py b/src/integration_tests/test_admin_user.py
index 37dc0bf..16f0c98 100644
--- a/src/integration_tests/test_admin_user.py
+++ b/src/integration_tests/test_admin_user.py
@@ -5,24 +5,24 @@
 v = os.getenv("VERSION")
 
 def test_get_users():
-    if (client != None):
+    if (client is not None):
         response = client.get(f"/{v}/admin/user/all", headers=headers)
         assert response.status_code == 200
         assert len(response.json()) > 0
         
 def test_get_user_by_id():
-    if (client != None):
+    if (client is not None):
         response = client.get(f"/{v}/admin/user/1", headers=headers)
         assert response.status_code == 200
         assert response.json()["id"] == 1
 
 def test_add_user():
-    if (client != None):
+    if (client is not None):
         response = client.post(f"/{v}/admin/user/register", json={"username": "test_user", "email": "test_user@gmail.com", "password": "GoodPassword123", "is_admin": True, "disabled": False }, headers=headers)
         assert response.status_code == 201
         assert response.json()["username"] == "test_user"
 
 def test_delete_user():
-    if (client != None):
+    if (client is not None):
         response = client.delete(f"/{v}/admin/user/1", headers=headers)
-        assert response.text == None
\ No newline at end of file
+        assert response.text is None
\ No newline at end of file
diff --git a/src/integration_tests/test_health.py b/src/integration_tests/test_health.py
index d5fe8e9..2cf500e 100644
--- a/src/integration_tests/test_health.py
+++ b/src/integration_tests/test_health.py
@@ -4,7 +4,7 @@
 v = os.getenv("VERSION")
 
 def test_get_health():
-    if (client != None):
+    if (client is not None):
         response = client.get(f"/{v}/health")
         assert response.status_code == 200
         assert response.json() == { 'status': 'ok', 'alive': True }
\ No newline at end of file
diff --git a/src/middleware/auth_guard.py b/src/middleware/auth_guard.py
index 471de6d..afb0d9c 100644
--- a/src/middleware/auth_guard.py
+++ b/src/middleware/auth_guard.py
@@ -66,6 +66,6 @@ async def get_current_active_user(current_user: UserRegisterSchema = Depends(get
     return current_user
 
 async def get_current_admin_user(current_user: UserRegisterSchema = Depends(get_current_user)):
-    if current_user.is_admin == False:
+    if current_user.is_admin is False:
         raise HTTPException(status_code=400, detail="User is not admin")
     return current_user
\ No newline at end of file