diff --git a/source/scripts/engine.js b/source/scripts/engine.js
index 77abfb1..27a76d4 100644
--- a/source/scripts/engine.js
+++ b/source/scripts/engine.js
@@ -1505,6 +1505,10 @@ var gameobject = {
   stop() {},
 
   kill() {
+    if (this.body === -1) {
+      Log.warn(`Object is already dead!`);
+      return;
+    }
     Register.endofloop(() => {
       cmd(2, this.body);
       delete Game.objects[this.body];