diff --git a/specs/radix-sort/radix-sort.solution.test.js b/specs/radix-sort/radix-sort.solution.test.js
index 0f81f0d8..0bd9feab 100644
--- a/specs/radix-sort/radix-sort.solution.test.js
+++ b/specs/radix-sort/radix-sort.solution.test.js
@@ -104,7 +104,7 @@ describe("radix sort", function () {
     const nums = new Array(fill)
       .fill()
       .map(() => Math.floor(Math.random() * 500000));
-    const ans = radixSort(nums);
-    expect(ans).toEqual(nums.sort());
+    const ans = radixSort([...nums]);
+    expect(ans).toEqual([...nums].sort((a, b) => a - b));
   });
 });
diff --git a/specs/radix-sort/radix-sort.test.js b/specs/radix-sort/radix-sort.test.js
index b32ae006..396c5882 100644
--- a/specs/radix-sort/radix-sort.test.js
+++ b/specs/radix-sort/radix-sort.test.js
@@ -70,7 +70,7 @@ describe.skip("radix sort", function () {
     const nums = new Array(fill)
       .fill()
       .map(() => Math.floor(Math.random() * 500000));
-    const ans = radixSort(nums);
-    expect(ans).toEqual(nums.sort());
+    const ans = radixSort([...nums]);
+    expect(ans).toEqual([...nums].sort((a, b) => a - b));
   });
 });