diff --git a/static/script.js b/static/script.js
index 8123c42..5e270de 100644
--- a/static/script.js
+++ b/static/script.js
@@ -625,8 +625,8 @@ if (isIndexPage) {
   }
 
   function syncSkillsHiddenInput() {
-    if (!skillsHidden) {
-      var skillsHidden = document.getElementById("skills");
+    if (!skillsHidden){
+      skillsHidden = document.getElementById("skills");
     }
     // Keep the hidden <input> in sync for form serialisation
     // The API expects a comma-separated string, so join the array that way