diff --git a/src/main/java/net/Indyuce/mmocore/api/experience/source/KillMobExperienceSource.java b/src/main/java/net/Indyuce/mmocore/api/experience/source/KillMobExperienceSource.java
index 7e9c8475..a93e2943 100644
--- a/src/main/java/net/Indyuce/mmocore/api/experience/source/KillMobExperienceSource.java
+++ b/src/main/java/net/Indyuce/mmocore/api/experience/source/KillMobExperienceSource.java
@@ -28,7 +28,7 @@ public class KillMobExperienceSource extends SpecificExperienceSource<Entity> {
 
 			@EventHandler
 			public void a(EntityKillEntityEvent event) {
-				if (event.getEntity() instanceof Player) {
+				if (event.getEntity() instanceof Player && !event.getEntity().hasMetadata("NPC")) {
 					PlayerData data = PlayerData.get((Player) event.getEntity());
 
 					for (KillMobExperienceSource source : getSources())