diff --git a/voicevox_engine/synthesis_engine/synthesis_engine_base.py b/voicevox_engine/synthesis_engine/synthesis_engine_base.py
index 4e17669db..7b6b2824b 100644
--- a/voicevox_engine/synthesis_engine/synthesis_engine_base.py
+++ b/voicevox_engine/synthesis_engine/synthesis_engine_base.py
@@ -90,7 +90,7 @@ def speakers(self) -> str:
     def supported_devices(self) -> Optional[str]:
         raise NotImplementedError
 
-    def initialize_speaker_synthesis(self, speaker_id: int):
+    def initialize_speaker_synthesis(self, speaker_id: int):  # noqa: B027
         """
         指定した話者での音声合成を初期化する。何度も実行可能。
         未実装の場合は何もしない