diff --git a/core/src/main/java/de/erethon/dungeonsxl/sign/windup/MobSign.java b/core/src/main/java/de/erethon/dungeonsxl/sign/windup/MobSign.java
index 592f29d8..e1a51ff6 100644
--- a/core/src/main/java/de/erethon/dungeonsxl/sign/windup/MobSign.java
+++ b/core/src/main/java/de/erethon/dungeonsxl/sign/windup/MobSign.java
@@ -151,6 +151,10 @@ public class MobSign extends Windup {
             }
         }
 
+        if (spawned == null) {
+            return null;
+        }
+
         spawned.setRemoveWhenFarAway(false);
         spawnedMobs.add(spawned);
         return spawned;