diff --git a/BauSystem/BauSystem_Main/src/de/steamwar/bausystem/features/simulator/gui/base/SimulatorBaseGui.java b/BauSystem/BauSystem_Main/src/de/steamwar/bausystem/features/simulator/gui/base/SimulatorBaseGui.java
index 9e81340b..7aee66a0 100644
--- a/BauSystem/BauSystem_Main/src/de/steamwar/bausystem/features/simulator/gui/base/SimulatorBaseGui.java
+++ b/BauSystem/BauSystem_Main/src/de/steamwar/bausystem/features/simulator/gui/base/SimulatorBaseGui.java
@@ -70,7 +70,7 @@ public abstract class SimulatorBaseGui {
             return;
         }
 
-        player.getOpenInventory().close();
+        TrickyTrialsWrapper.impl.closeInventoryView(player.getOpenInventory());
 
         inventory = new SWInventory(player, () -> {
             inv = Bukkit.createInventory(null, size, title());
diff --git a/SpigotCore/SpigotCore_21/src/de/steamwar/core/TrickyTrialsWrapper21.java b/SpigotCore/SpigotCore_21/src/de/steamwar/core/TrickyTrialsWrapper21.java
index 1b10c742..840c4cad 100644
--- a/SpigotCore/SpigotCore_21/src/de/steamwar/core/TrickyTrialsWrapper21.java
+++ b/SpigotCore/SpigotCore_21/src/de/steamwar/core/TrickyTrialsWrapper21.java
@@ -45,4 +45,9 @@ public class TrickyTrialsWrapper21 implements TrickyTrialsWrapper {
     public String getInventoryTitle(InventoryView view) {
         return view.getTitle();
     }
+
+    @Override
+    public void closeInventoryView(InventoryView view) {
+        view.close();
+    }
 }
diff --git a/SpigotCore/SpigotCore_8/src/de/steamwar/core/TrickyTrialsWrapper8.java b/SpigotCore/SpigotCore_8/src/de/steamwar/core/TrickyTrialsWrapper8.java
index 35b80c58..0b67fdff 100644
--- a/SpigotCore/SpigotCore_8/src/de/steamwar/core/TrickyTrialsWrapper8.java
+++ b/SpigotCore/SpigotCore_8/src/de/steamwar/core/TrickyTrialsWrapper8.java
@@ -44,4 +44,9 @@ public class TrickyTrialsWrapper8 implements TrickyTrialsWrapper {
     public String getInventoryTitle(InventoryView view) {
         return view.getTitle();
     }
+
+    @Override
+    public void closeInventoryView(InventoryView view) {
+        view.close();
+    }
 }
diff --git a/SpigotCore/SpigotCore_Main/src/de/steamwar/core/TrickyTrialsWrapper.java b/SpigotCore/SpigotCore_Main/src/de/steamwar/core/TrickyTrialsWrapper.java
index da8fc7cd..02d8febf 100644
--- a/SpigotCore/SpigotCore_Main/src/de/steamwar/core/TrickyTrialsWrapper.java
+++ b/SpigotCore/SpigotCore_Main/src/de/steamwar/core/TrickyTrialsWrapper.java
@@ -34,4 +34,6 @@ public interface TrickyTrialsWrapper {
     Material getTurtleScute();
 
     String getInventoryTitle(InventoryView view);
+
+    void closeInventoryView(InventoryView view);
 }