diff --git a/snippets/join.md b/snippets/join.md
index f951070e5..b5a847dc9 100644
--- a/snippets/join.md
+++ b/snippets/join.md
@@ -3,7 +3,7 @@
 Is like `Array.join()` but with an additional argument of `end`(is equal to `separator` by default) which is used to separate the second to last and last items in the array. Returns `""` when the array is empty and the first item when the length of array is 1.
 
 ```js
-const join = (arr,separator = ',',end = separator ) => {
+const join = (arr = [],separator = ',',end = separator ) => {
       return arr.reduce((acc,val,i) => {
        return  i == arr.length - 2 ? acc + val + end : i == arr.length - 1 ? acc + val : acc + val + separator
      },'')