diff --git a/selfprivacy_api/repositories/tokens/json_tokens_repository.py b/selfprivacy_api/repositories/tokens/json_tokens_repository.py
index 55316d6..12826ba 100644
--- a/selfprivacy_api/repositories/tokens/json_tokens_repository.py
+++ b/selfprivacy_api/repositories/tokens/json_tokens_repository.py
@@ -147,7 +147,7 @@ class JsonTokensRepository(AbstractTokensRepository):
         if not self._assert_mnemonic(new_device_key.key, mnemonic_phrase):
             raise NewDeviceKeyNotFound("Phrase is not token!")
 
-        new_token = Token.generate(device_name=device_name)
+        new_token = self.create_token(device_name=device_name)
         self.delete_new_device_key()
 
         return new_token
diff --git a/tests/test_graphql/test_repository/test_tokens_repository.py b/tests/test_graphql/test_repository/test_tokens_repository.py
index df56444..bdad6d8 100644
--- a/tests/test_graphql/test_repository/test_tokens_repository.py
+++ b/tests/test_graphql/test_repository/test_tokens_repository.py
@@ -499,14 +499,14 @@ def test_use_mnemonic_new_device_key(
     repo = empty_repo
     assert repo.get_new_device_key() is not None
 
-    assert (
-        repo.use_mnemonic_new_device_key(
-            device_name="imnew",
-            mnemonic_phrase="captain ribbon toddler settle symbol minute step broccoli bless universe divide bulb",
-        )
-        is not None
+    new_token = repo.use_mnemonic_new_device_key(
+        device_name="imnew",
+        mnemonic_phrase="captain ribbon toddler settle symbol minute step broccoli bless universe divide bulb",
     )
 
+    assert new_token.device_name == "imnew"
+    assert new_token in repo.get_tokens()
+
     # we must delete the key after use
     with pytest.raises(NewDeviceKeyNotFound):
         assert (