diff --git a/snippets/extendHex.md b/snippets/extendHex.md
index 54879b1e4..994d592b3 100644
--- a/snippets/extendHex.md
+++ b/snippets/extendHex.md
@@ -6,7 +6,7 @@ Use `Array.map()`, `split()` and `Array.join()` to join the mapped array for con
 `Array.slice()` is used to remove `#` from string start since it's added once.
 ```js
 const extendHex = shortHex =>
-  '#' + shortHex.slice(shortHex.startsWith('#') ? 1 : 0).split().map(x => x+x).join()
+  '#' + shortHex.slice(shortHex.startsWith('#') ? 1 : 0).split('').map(x => x+x).join('')
 // convertHex('#03f') -> '#0033ff'
 // convertHex('05a') -> '#0055aa'
 ```