diff --git a/index.js b/index.js
index 86eb6d1316ee4af8b4b9709edbf12ea37e170244..2ba59f63af09f0ac6460bed267c7ccd66d1b36bc 100644
--- a/index.js
+++ b/index.js
@@ -1,3 +1,7 @@
 function add(a, b) {
   return a + b;
 }
+
+function multiplicate(c, c) {
+  return c * d;
+}