--- contrib/python/moto/py3/moto/core/responses.py
+++ contrib/python/moto/py3/moto/core/responses.py
@@ -344,6 +344,7 @@ class BaseResponse(_TemplateEnvironmentMixin, ActionAuthenticatorMixin):
             return "AKIAEXAMPLE"

     def get_current_account(self):
+        return "123456789012"
         # PRIO 1: Check if we have a Environment Variable set
         if "MOTO_ACCOUNT_ID" in os.environ:
             return os.environ["MOTO_ACCOUNT_ID"]