diff --git a/README.md b/README.md
index ee3f560f7..ed642cf3f 100644
--- a/README.md
+++ b/README.md
@@ -102,7 +102,7 @@ Use `Array.concat()` to concatenate and array with any additional arrays and/or
 
 ```js
 const arrayConcat = (arr, ...args) => arr.concat(...args);
-// arrayConcat([1], [1, 2, 3, [4]]) -> [1, 1, 2, 3, [4]]
+// arrayConcat([1], 2, [3], [[4]]) -> [1,2,3,[4]]
 ```
 
 ### Array difference
diff --git a/snippets/array-concatenation.md b/snippets/array-concatenation.md
index b7b26ea26..b4e2fa205 100644
--- a/snippets/array-concatenation.md
+++ b/snippets/array-concatenation.md
@@ -4,5 +4,5 @@ Use `Array.concat()` to concatenate and array with any additional arrays and/or
 
 ```js
 const arrayConcat = (arr, ...args) => arr.concat(...args);
-// arrayConcat([1], [1, 2, 3, [4]]) -> [1, 1, 2, 3, [4]]
+// arrayConcat([1], 2, [3], [[4]]) -> [1,2,3,[4]]
 ```