diff --git a/main/src/main/java/me/blackvein/quests/Quester.java b/main/src/main/java/me/blackvein/quests/Quester.java
index 066b9a199..86134f50b 100644
--- a/main/src/main/java/me/blackvein/quests/Quester.java
+++ b/main/src/main/java/me/blackvein/quests/Quester.java
@@ -2178,6 +2178,9 @@ public class Quester implements Comparable<Quester> {
         }
         
         final int index = questData.mobsKilled.indexOf(e);
+        if (index == -1) {
+            return;
+        }
         final int mobsKilled = questData.mobNumKilled.get(index);
         final int mobsToKill = currentStage.mobNumToKill.get(index);
         if (questData.locationsToKillWithin.isEmpty() == false) {