diff --git a/src/games/reversi/core.ts b/src/games/reversi/core.ts
index cf8986263b..09d23e2b70 100644
--- a/src/games/reversi/core.ts
+++ b/src/games/reversi/core.ts
@@ -257,7 +257,7 @@ export default class Reversi {
 	public get winner(): Color | null {
 		return this.isEnded ?
 			this.blackCount == this.whiteCount ? null :
-			this.opts.isLlotheo === this.blackCount > this.whiteCount　? WHITE : BLACK :
+			this.opts.isLlotheo === this.blackCount > this.whiteCount ? WHITE : BLACK :
 			undefined as never;
 	}
 }
diff --git a/src/services/logger.ts b/src/services/logger.ts
index 190bbdd253..c393f017c2 100644
--- a/src/services/logger.ts
+++ b/src/services/logger.ts
@@ -90,7 +90,7 @@ export default class Logger {
 		}
 	}
 
-	public warn(message: string, data?: Record<string, any> | null, important = false): void {　// 実行を継続できるが改善すべき状況で使う
+	public warn(message: string, data?: Record<string, any> | null, important = false): void { // 実行を継続できるが改善すべき状況で使う
 		this.log('warning', message, data, important);
 	}