diff --git a/tests/test_bot/test_api.py b/tests/test_bot/test_api.py
index c5193bcc..0543a11f 100644
--- a/tests/test_bot/test_api.py
+++ b/tests/test_bot/test_api.py
@@ -1,18 +1,28 @@
 import pytest
-from aiogram.bot.api import check_token
 
+from aiogram.bot.api import check_token
 from aiogram.utils.exceptions import ValidationError
 
-
 VALID_TOKEN = '123456789:AABBCCDDEEFFaabbccddeeff-1234567890'
-INVALID_TOKEN = '123456789:AABBCCDDEEFFaabbccddeeff 123456789'  # Space in token and wrong length
+INVALID_TOKENS = [
+    '123456789:AABBCCDDEEFFaabbccddeeff 123456789',  # space is exists
+    'ABC:AABBCCDDEEFFaabbccddeeff123456789',  # left part is not digit
+    ':AABBCCDDEEFFaabbccddeeff123456789',  # there is no left part
+    '123456789:',  # there is no right part
+    'ABC AABBCCDDEEFFaabbccddeeff123456789',  # there is no ':' separator
+]
 
 
-class Test_check_token:
+@pytest.fixture(params=INVALID_TOKENS, name='invalid_token')
+def invalid_token_fixture(request):
+    return request.param
+
+
+class TestCheckToken:
 
     def test_valid(self):
         assert check_token(VALID_TOKEN) is True
 
-    def test_invalid_token(self):
+    def test_invalid_token(self, invalid_token):
         with pytest.raises(ValidationError):
-            check_token(INVALID_TOKEN)
+            check_token(invalid_token)