diff --git a/assets/js/main.js b/assets/js/main.js
index 4c69f30..9fd4c73 100644
--- a/assets/js/main.js
+++ b/assets/js/main.js
@@ -15,7 +15,9 @@ function comments(elm) {
 
 function contact() {
     var link = document.getElementById('contact');
-    link.href = "mai" + "lto:" + getAddress();
+    if (link) {
+      link.href = "mai" + "lto:" + getAddress();
+    }
 }
 
 function changeTheme() {