diff --git a/hutool-core/src/main/java/cn/hutool/core/lang/Singleton.java b/hutool-core/src/main/java/cn/hutool/core/lang/Singleton.java
index e78223d4d..f74462ea7 100644
--- a/hutool-core/src/main/java/cn/hutool/core/lang/Singleton.java
+++ b/hutool-core/src/main/java/cn/hutool/core/lang/Singleton.java
@@ -80,7 +80,7 @@ public final class Singleton {
 	}
 
 	/**
-	 * 将已有对象放入单例中，其Class做为键
+	 * 将已有对象放入单例中，key做为键
 	 *
 	 * @param key 键
 	 * @param obj 对象