diff --git a/1-js/05-data-types/04-array/article.md b/1-js/05-data-types/04-array/article.md
index 27c2300c..ce67b98a 100644
--- a/1-js/05-data-types/04-array/article.md
+++ b/1-js/05-data-types/04-array/article.md
@@ -329,7 +329,7 @@ Generally, we shouldn't use `for..in` for arrays.
 
 ## A word about "length"
 
-The `length` property automatically updates when we modify the array. To be precies, it is actually not the count of values in the array, but the greatest numeric index plus one.
+The `length` property automatically updates when we modify the array. To be precise, it is actually not the count of values in the array, but the greatest numeric index plus one.
 
 For instance, a single element with a large index gives a big length: