diff --git a/index.js b/index.js
index 8b7de06..035eb4f 100644
--- a/index.js
+++ b/index.js
@@ -25,7 +25,7 @@
 	};
 
 	/**
-	 * Array.map will always be missing the last element on Thursday
+	 * Array.map will always be missing the last element on Sundays
 	 * @zh 当周日时，map方法的结果总是会丢失最后一个元素
 	 */
 	const _map = Array.prototype.map;