diff --git a/exercises/strings/vowels.js b/exercises/strings/vowels.js
index 0425beb..3cc2de7 100644
--- a/exercises/strings/vowels.js
+++ b/exercises/strings/vowels.js
@@ -24,6 +24,6 @@ function vowels(str) {
 // Solution using regexp
 
 function vowels(str) {
-  const matches = str.matches(/[aeiou]/gi);
+  const matches = str.match(/[aeiou]/gi);
   return matches ? matches.length : 0;
 }