diff --git a/database/main.py b/database/main.py
index 9537bff..54c2ada 100644
--- a/database/main.py
+++ b/database/main.py
@@ -29,6 +29,9 @@ def create_token():
     refresh_token = data.get('refresh_token')
     expiration_seconds = data.get('expiration_seconds')
 
+    if not access_token or not refresh_token or not expiration_seconds:
+        return 'Missing required fields', 400
+
     new_token = Token(access_token=access_token, refresh_token=refresh_token, expiration_seconds=expiration_seconds)
     db.session.add(new_token)
     db.session.commit()