diff --git a/.gitignore b/.gitignore
index e17f9a07..fe107776 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,2 +1,2 @@
 .DS_STORE
-node_modules
+node_modules/
diff --git a/testing/__tests__/sum_tests.js b/testing/__tests__/sum_tests.js
index e9723790..8eb63da7 100644
--- a/testing/__tests__/sum_tests.js
+++ b/testing/__tests__/sum_tests.js
@@ -7,5 +7,5 @@ test('adds 1 + 2 to equal 3', () => {
 });
 
 test('adds 1 + 2 to equal 3', () => {
-  expect(sum(1,2)).toBe(3);
+  expect(sum(1,2)).toBe(4);
 });