diff --git a/core/src/main/java/de/erethon/dungeonsxl/sign/windup/MobSpawnTask.java b/core/src/main/java/de/erethon/dungeonsxl/sign/windup/MobSpawnTask.java
index 9feb7ae2..68542a7d 100644
--- a/core/src/main/java/de/erethon/dungeonsxl/sign/windup/MobSpawnTask.java
+++ b/core/src/main/java/de/erethon/dungeonsxl/sign/windup/MobSpawnTask.java
@@ -40,7 +40,7 @@ public class MobSpawnTask extends BukkitRunnable {
     @Override
     public void run() {
         if (gameWorld == null) {
-            cancel();
+            sign.deactivate();
             return;
         }
 
@@ -52,7 +52,7 @@ public class MobSpawnTask extends BukkitRunnable {
         if (k < n) {
             k++;
         } else {
-            cancel();
+            sign.deactivate();
         }
     }