diff --git a/src/main/java/net/minecraft/server/World.java b/src/main/java/net/minecraft/server/World.java
index 3275e36952..9844892cd0 100644
--- a/src/main/java/net/minecraft/server/World.java
+++ b/src/main/java/net/minecraft/server/World.java
@@ -834,6 +834,8 @@ public class World implements IBlockAccess {
                 type = MobType.SPIDER;
             } else if (entity instanceof EntityZombie) {
                 type = MobType.ZOMBIE;
+            } else if (entity instanceof EntitySlime) {
+                type = MobType.SLIME;
             }
 
             if (type != null) {