diff --git a/tests/test_downloadermiddleware_useragent.py b/tests/test_downloadermiddleware_useragent.py
index a286764fd..c97e28cb8 100644
--- a/tests/test_downloadermiddleware_useragent.py
+++ b/tests/test_downloadermiddleware_useragent.py
@@ -20,7 +20,7 @@ class UserAgentMiddlewareTest(TestCase):
         self.assertEqual(req.headers['User-Agent'], b'default_useragent')
 
     def test_remove_agent(self):
-        # settings UESR_AGENT to None should remove the user agent
+        # settings USER_AGENT to None should remove the user agent
         spider, mw = self.get_spider_and_mw('default_useragent')
         spider.user_agent = None
         mw.spider_opened(spider)