diff --git a/labs/nodejs/sum.js b/labs/nodejs/sum.js
index e54faa6..afa261c 100644
--- a/labs/nodejs/sum.js
+++ b/labs/nodejs/sum.js
@@ -1,5 +1,5 @@
 function sum(a, b) {
-  return 0;
+  return a + b;
 }
 
 module.exports = sum;
diff --git a/labs/nodejs/sum.test.js b/labs/nodejs/sum.test.js
index 5000f06..dafe703 100644
--- a/labs/nodejs/sum.test.js
+++ b/labs/nodejs/sum.test.js
@@ -1,5 +1,9 @@
 const sum = require("./sum");
 
-test.skip("adds 1 + 2 to equal 3", () => {
+test("adds 1 + 2 to equal 3", () => {
   expect(sum(1, 2)).toBe(3)
 });
+
+test("adds 2 + 2 to equal 4", () => {
+  expect(sum(2, 2)).toBe(4)
+});