diff --git a/BauSystem/BauSystem_Main/src/de/steamwar/bausystem/features/region/TestblockCommand.java b/BauSystem/BauSystem_Main/src/de/steamwar/bausystem/features/region/TestblockCommand.java
index f8e9c653..f91c3e95 100644
--- a/BauSystem/BauSystem_Main/src/de/steamwar/bausystem/features/region/TestblockCommand.java
+++ b/BauSystem/BauSystem_Main/src/de/steamwar/bausystem/features/region/TestblockCommand.java
@@ -105,6 +105,10 @@ public class TestblockCommand extends SWCommand {
             case 12258:
                 if (node == null) {
                     node = region.getRegionData().getTestblockSchematic();
+                    if (node != null && !node.accessibleByUser(SteamwarUser.get(bauServer.getOwner()))) {
+                        node = null;
+                        region.getRegionData().setTestblockSchematic(null);
+                    }
                 } else {
                     region.getRegionData().setTestblockSchematic(node);
                 }