diff --git a/snippets/arraySum.md b/snippets/arraySum.md
index 31533d929..265c7fc60 100644
--- a/snippets/arraySum.md
+++ b/snippets/arraySum.md
@@ -5,6 +5,6 @@ Returns the sum of an array of numbers.
 Use `Array.reduce()` to add each value to an accumulator, initialized with a value of `0`.
 
 ```js
-const arraySum = zarr => arr.reduce((acc, val) => acc + val, 0);
+const arraySum = arr => arr.reduce((acc, val) => acc + val, 0);
 // arraySum([1,2,3,4]) -> 10
 ```