diff --git a/test_bot/test_external_moves.py b/test_bot/test_external_moves.py
index a820a829f..3888c4671 100644
--- a/test_bot/test_external_moves.py
+++ b/test_bot/test_external_moves.py
@@ -116,7 +116,7 @@ def download_opening_book() -> None:
 
 def get_online_move_wrapper(li: LICHESS_TYPE, board: chess.Board, game: Game, online_moves_cfg: Configuration,
                             draw_or_resign_cfg: Configuration) -> chess.engine.PlayResult:
-    """Wrapper for lib.engine_wrapper.get_online_move."""
+    """Wrap `lib.engine_wrapper.get_online_move` so that it only returns a PlayResult type."""
     return cast(chess.engine.PlayResult, get_online_move(li, board, game, online_moves_cfg, draw_or_resign_cfg))