diff --git a/tests/test_plugin_api_http_session.py b/tests/test_plugin_api_http_session.py
index b0c24da2..a30f8118 100644
--- a/tests/test_plugin_api_http_session.py
+++ b/tests/test_plugin_api_http_session.py
@@ -8,12 +8,13 @@ class TestPluginAPIHTTPSession(unittest.TestCase):
     def test_read_timeout(self):
         session = HTTPSession()
 
-        with self.assertRaises(PluginError):
+        def stream_data():
             res = session.get("http://httpbin.org/delay/6",
                               timeout=3, stream=True)
             next(res.iter_content(8192))
 
 
+        self.assertRaises(PluginError, stream_data)
 
 if __name__ == "__main__":
     unittest.main()