diff --git a/src/front/pages/invite.js b/src/front/pages/invite.js
index c5b947e..bca4e92 100644
--- a/src/front/pages/invite.js
+++ b/src/front/pages/invite.js
@@ -1,12 +1,18 @@
+const checkNostrExtension = require('../utils/checkNostrExtension');
+
 const invitesFunction = () => {
-  window.onload = function () {
-    if (!window.nostr) {
-      console.log('Nostr extension not present');
-      document.querySelector('#nostr-signup-button').disabled = true;
-      document.querySelector('#no-extension-nudges').style.display = 'block';
-    } else {
-      console.log('Nostr extension present');
-    }
+  window.onload = () => {
+    checkNostrExtension(
+      window,
+      () => {
+        console.log('Nostr extension present');
+      },
+      () => {
+        console.log('Nostr extension not present');
+        document.querySelector('#nostr-signup-button').disabled = true;
+        document.querySelector('#no-extension-nudges').style.display = 'block';
+      }
+    );
   };
 
   const signUpConfirmation = document.querySelector('#sign-up-success');
diff --git a/src/front/utils/checkNostrExtension.js b/src/front/utils/checkNostrExtension.js
new file mode 100644
index 0000000..b1d9610
--- /dev/null
+++ b/src/front/utils/checkNostrExtension.js
@@ -0,0 +1,9 @@
+function checkNostrExtension(window, successCallback, failureCallback) {
+  if (!window.nostr) {
+    failureCallback();
+  } else {
+    successCallback();
+  }
+}
+
+module.exports = checkNostrExtension;