diff --git a/1-js/05-data-types/05-array-methods/article.md b/1-js/05-data-types/05-array-methods/article.md
index 5d114e5c..c30f1796 100644
--- a/1-js/05-data-types/05-array-methods/article.md
+++ b/1-js/05-data-types/05-array-methods/article.md
@@ -767,7 +767,7 @@ A cheat sheet of array methods:
   - `reduce/reduceRight(func, initial)` -- calculate a single value over the array by calling `func` for each element and passing an intermediate result between the calls.
 
 - Additionally:
-  - `Array.isArray(arr)` checks `arr` for being an array.
+  - `Array.isArray(value)` checks `value` for being an array, if so return true, otherwise false.
 
 Please note that methods `sort`, `reverse` and `splice` modify the array itself.