diff --git a/snippets/findLastIndex.md b/snippets/findLastIndex.md
index 70dccd442..31d8f36d2 100644
--- a/snippets/findLastIndex.md
+++ b/snippets/findLastIndex.md
@@ -3,14 +3,14 @@
 Returns the index of the last element for which the provided function returns a truthy value.
 
 Use `Array.map()` to map each element to an array with its index and value.
-Use `Array.filter()` to remove elements for which `fn` returns falsey values, `Array.slice(-1)` to get the last one.
+Use `Array.filter()` to remove elements for which `fn` returns falsey values, `Array.pop()` to get the last one.
 
 ```js
 const findLastIndex = (arr, fn) =>
   arr
     .map((val, i) => [i, val])
-    .filter(val => fn(val[1], val[0], arr))
-    .slice(-1)[0][0];
+    .filter(([i, val]) => fn(val, i, arr))
+    .pop()[0];
 ```
 
 ```js
diff --git a/test/findLastIndex/findLastIndex.js b/test/findLastIndex/findLastIndex.js
index 41e536d7d..d098c7ed1 100644
--- a/test/findLastIndex/findLastIndex.js
+++ b/test/findLastIndex/findLastIndex.js
@@ -1,6 +1,6 @@
 const findLastIndex = (arr, fn) =>
 arr
 .map((val, i) => [i, val])
-.filter(val => fn(val[1], val[0], arr))
-.slice(-1)[0][0];
+.filter(([i, val]) => fn(val, i, arr))
+.pop()[0];
 module.exports = findLastIndex;
\ No newline at end of file