diff --git a/BauSystem_Main/src/de/steamwar/bausystem/features/region/RegionListener.java b/BauSystem_Main/src/de/steamwar/bausystem/features/region/RegionListener.java
index 09b26cd3..5c43f369 100644
--- a/BauSystem_Main/src/de/steamwar/bausystem/features/region/RegionListener.java
+++ b/BauSystem_Main/src/de/steamwar/bausystem/features/region/RegionListener.java
@@ -19,7 +19,6 @@
 
 package de.steamwar.bausystem.features.region;
 
-import com.sun.istack.internal.NotNull;
 import de.steamwar.bausystem.BauSystem;
 import de.steamwar.bausystem.linkage.LinkageType;
 import de.steamwar.bausystem.linkage.Linked;