diff --git a/src/server.js b/src/server.js
index 6e0a7f1..6d7aa4b 100644
--- a/src/server.js
+++ b/src/server.js
@@ -103,7 +103,7 @@ const process_adsb2dd = async () => {
     adsb2dd(key, json);
 
     // remove key after inactivity
-    if (Date.now()/1000-dict[key]['out']['timestamp'] > tDelete) {
+    if (Date.now()/1000-dict[key]['timestamp'] > tDelete) {
       delete(dict[key]);
     }