diff --git a/html/script.js b/html/script.js
index bc439a8..6f1fcf9 100644
--- a/html/script.js
+++ b/html/script.js
@@ -2852,6 +2852,8 @@ function togglePersistence() {
 }
 
 function toggleLastLeg() {
+    if (!globeIndex)
+        return;
     if (lastLeg) {
         lastLeg = false;
         localStorage['lastLeg'] = "false";