diff --git a/10_fibonacci/fibonacci.js b/10_fibonacci/fibonacci.js
index 38f2021..91e3c1a 100644
--- a/10_fibonacci/fibonacci.js
+++ b/10_fibonacci/fibonacci.js
@@ -1,4 +1,10 @@
 const fibonacci = function(number) {
+    if (number == 0) {
+        return 0;
+    }
+    if (number < 0) {
+        return "OOPS";
+    }
     let a = 1, b = 1;
     let sum = a;
     for (let i = 0;
diff --git a/10_fibonacci/fibonacci.spec.js b/10_fibonacci/fibonacci.spec.js
index 6601caf..ef1f3c8 100644
--- a/10_fibonacci/fibonacci.spec.js
+++ b/10_fibonacci/fibonacci.spec.js
@@ -22,10 +22,10 @@ describe('fibonacci', () => {
   test('2nd fibonacci number is 1', () => {
     expect(fibonacci(2)).toBe(1);
   });
-  test.skip('0th fibonacci number is 0', () => {
+  test('0th fibonacci number is 0', () => {
     expect(fibonacci(0)).toBe(0);
   });
-  test.skip('doesn\'t accept negatives', () => {
+  test('doesn\'t accept negatives', () => {
     expect(fibonacci(-25)).toBe("OOPS");
   });
   test.skip('DOES accept strings', () => {