diff --git a/snippets/isSorted.md b/snippets/isSorted.md
index fc29d3810..cd0a6a7fe 100644
--- a/snippets/isSorted.md
+++ b/snippets/isSorted.md
@@ -14,7 +14,7 @@ const isSorted = arr => {
   let direction = -(arr[0] - arr[1]);
   for (let [i, val] of arr.entries()) {
     direction = !direction ? -(arr[i - 1] - arr[i]) : direction;
-    if (i === arr.length - 1) return !direction ? 0 : direction;
+    if (i === arr.length - 1) return !direction ? 0 : direction / Math.abs(direction);
     else if ((val - arr[i + 1]) * direction > 0) return 0;
   }
 };
@@ -24,4 +24,4 @@ const isSorted = arr => {
 isSorted([0, 1, 2, 2]); // 1
 isSorted([4, 3, 2]); // -1
 isSorted([4, 3, 5]); // 0
-```
\ No newline at end of file
+```