diff --git a/tests/stockfish/test_models.py b/tests/stockfish/test_models.py
index a939c19..528482b 100644
--- a/tests/stockfish/test_models.py
+++ b/tests/stockfish/test_models.py
@@ -44,7 +44,7 @@ def test_sf_process(self):
         wtime_lines = send_command(process, "go wtime 1000")
         btime_lines = send_command(process, "go btime 1000")
         send_command(process, "quit")
-        assert any(x.startswith('bestmove {move}') for move in ('d2d4', 'b1c3') for x in wtime_lines)
-        assert any(x.startswith('bestmove {move}') for move in ('d2d4', 'b1c3') for x in btime_lines)
+        assert any(x.startswith(f'bestmove {move}') for move in ('d2d4', 'b1c3') for x in wtime_lines)
+        assert any(x.startswith(f'bestmove {move}') for move in ('d2d4', 'b1c3') for x in btime_lines)