diff --git a/tests/test_http_response.py b/tests/test_http_response.py
index 0f42df2..1fc2439 100644
--- a/tests/test_http_response.py
+++ b/tests/test_http_response.py
@@ -13,11 +13,9 @@ class TestHTTPResponse(DaphneTestCase):
         Lowercases and sorts headers, and strips transfer-encoding ones.
         """
         return sorted(
-            [
-                (name.lower(), value.strip())
-                for name, value in headers
-                if name.lower() != b"transfer-encoding"
-            ]
+            (name.lower(), value.strip())
+            for name, value in headers
+            if name.lower() != b"transfer-encoding"
         )
 
     def encode_headers(self, headers):