diff --git a/api/src/main/java/de/erethon/dungeonsxl/api/sign/AbstractDSign.java b/api/src/main/java/de/erethon/dungeonsxl/api/sign/AbstractDSign.java
index 22573250..66c2856d 100644
--- a/api/src/main/java/de/erethon/dungeonsxl/api/sign/AbstractDSign.java
+++ b/api/src/main/java/de/erethon/dungeonsxl/api/sign/AbstractDSign.java
@@ -42,6 +42,7 @@ public abstract class AbstractDSign implements DungeonSign {
     private Sign sign;
     private String[] lines;
     private InstanceWorld instance;
+    String worldName;
     private Set<Trigger> triggers = new HashSet<>();
     private boolean initialized;
     private boolean erroneous;
@@ -51,6 +52,7 @@ public abstract class AbstractDSign implements DungeonSign {
         this.sign = sign;
         this.lines = lines;
         this.instance = instance;
+        worldName = instance.getWorld().getName();
     }
 
     @Override
diff --git a/api/src/main/java/de/erethon/dungeonsxl/api/sign/Windup.java b/api/src/main/java/de/erethon/dungeonsxl/api/sign/Windup.java
index 4edc581a..53e7fc73 100644
--- a/api/src/main/java/de/erethon/dungeonsxl/api/sign/Windup.java
+++ b/api/src/main/java/de/erethon/dungeonsxl/api/sign/Windup.java
@@ -190,7 +190,7 @@ public abstract class Windup extends Deactivatable {
      * @return if the world is already finished
      */
     public boolean isWorldFinished() {
-        return api.getGameWorld(getSign().getWorld()) != null;
+        return Bukkit.getWorld(worldName) == null;
     }
 
 }