diff --git a/JS/JS-ch.md b/JS/JS-ch.md
index e2ac2e23..4f1d2540 100644
--- a/JS/JS-ch.md
+++ b/JS/JS-ch.md
@@ -1123,7 +1123,7 @@ function MyPromise(fn) {
     })
   }
   // 用于解决以下问题
-  // new Promise(() => throw Error('error))
+  // new Promise(() => throw Error('error'))
   try {
     fn(_this.resolve, _this.reject);
   } catch (e) {
diff --git a/JS/JS-en.md b/JS/JS-en.md
index e0191761..a9cc1a19 100644
--- a/JS/JS-en.md
+++ b/JS/JS-en.md
@@ -859,7 +859,7 @@ function MyPromise(fn) {
   }
 
   // to solve the following problem
-  // `new Promise(() => throw Error('error))`
+  // `new Promise(() => throw Error('error'))`
   try {
     fn(_this.resolve, _this.reject);
   } catch (e) {