diff --git a/indestructable/CHANGELOG.md b/indestructable/CHANGELOG.md
index bf322bb..b5be013 100644
--- a/indestructable/CHANGELOG.md
+++ b/indestructable/CHANGELOG.md
@@ -2,6 +2,7 @@
 
 - Fix:
   - "max lives per boss kill" did not function correctly when set to 0/unlimited
+  - boss kills were not reliably detected
 
 # 0.2.7
 
diff --git a/indestructable/ca.ancilla.indestructable/Indestructable.zs b/indestructable/ca.ancilla.indestructable/Indestructable.zs
index 0198c2a..421c8e8 100644
--- a/indestructable/ca.ancilla.indestructable/Indestructable.zs
+++ b/indestructable/ca.ancilla.indestructable/Indestructable.zs
@@ -68,11 +68,11 @@ class ::IndestructableEventHandler : StaticEventHandler {
     }
   }
 
-  override void WorldThingDied(WorldEvent evt) {
-    if (!evt.thing.bBOSS || !evt.inflictor) return;
+  override void WorldThingDamaged(WorldEvent evt) {
+    if (!evt.thing || !evt.damagesource || !evt.thing.bBOSS || evt.thing.health > 0) return;
     let lives = GetInt("indestructable_lives_per_boss");
     if (!lives) return;
-    let pawn = PlayerPawn(evt.inflictor.target);
+    let pawn = PlayerPawn(evt.damagesource);
     if (!pawn) return;
     let force = ::IndestructableForce(pawn.FindInventory("::IndestructableForce"));
     if (!force) return; // PANIC