diff --git a/tests/test_websocket.py b/tests/test_websocket.py
index 20dacc59..851143c8 100644
--- a/tests/test_websocket.py
+++ b/tests/test_websocket.py
@@ -198,7 +198,7 @@ def test_root_path(self, *, daphne_path):
         """
         Tests root_path handling.
         """
-        headers = [("Daphne-Root-Path", parse.quote(daphne_path.encode("ascii")))]
+        headers = [("Daphne-Root-Path", parse.quote(daphne_path))]
         with DaphneTestingInstance() as test_app:
             test_app.add_send_messages([{"type": "websocket.accept"}])
             self.websocket_handshake(