diff --git a/js/nav.js b/js/nav.js
index 186b587..1de7386 100644
--- a/js/nav.js
+++ b/js/nav.js
@@ -1,8 +1,8 @@
 function menuFunction() {
-  var x = document.getElementByID("menu-hidden");
-  if x.style.display === "block") {
-    x.style.display = "none";
+  var hidden = document.getElementById("menu-hidden");
+  if hidden.style.display === "block") {
+    hidden.style.display = "none";
   } else {
-    x.style.display = "block";
+    hidden.style.display = "block";
   }
 }