diff --git a/scm-webapp/src/main/java/sonia/scm/cache/CacheManager.java b/scm-core/src/main/java/sonia/scm/cache/CacheManager.java
similarity index 100%
rename from scm-webapp/src/main/java/sonia/scm/cache/CacheManager.java
rename to scm-core/src/main/java/sonia/scm/cache/CacheManager.java
diff --git a/scm-webapp/src/main/java/sonia/scm/cache/ExtendedCache.java b/scm-core/src/main/java/sonia/scm/cache/ExtendedCache.java
similarity index 100%
rename from scm-webapp/src/main/java/sonia/scm/cache/ExtendedCache.java
rename to scm-core/src/main/java/sonia/scm/cache/ExtendedCache.java
diff --git a/scm-webapp/src/main/java/sonia/scm/cache/SimpleCache.java b/scm-core/src/main/java/sonia/scm/cache/SimpleCache.java
similarity index 100%
rename from scm-webapp/src/main/java/sonia/scm/cache/SimpleCache.java
rename to scm-core/src/main/java/sonia/scm/cache/SimpleCache.java
diff --git a/scm-core/src/main/java/sonia/scm/repository/Permission.java b/scm-core/src/main/java/sonia/scm/repository/Permission.java
index 961019306c..d3f0dd5a49 100644
--- a/scm-core/src/main/java/sonia/scm/repository/Permission.java
+++ b/scm-core/src/main/java/sonia/scm/repository/Permission.java
@@ -29,6 +29,8 @@
  *
  */
 
+
+
 package sonia.scm.repository;
 
 //~--- non-JDK imports --------------------------------------------------------
@@ -37,6 +39,8 @@ import sonia.scm.util.Util;
 
 //~--- JDK imports ------------------------------------------------------------
 
+import java.io.Serializable;
+
 import javax.xml.bind.annotation.XmlAccessType;
 import javax.xml.bind.annotation.XmlAccessorType;
 import javax.xml.bind.annotation.XmlRootElement;
@@ -47,9 +51,14 @@ import javax.xml.bind.annotation.XmlRootElement;
  */
 @XmlRootElement(name = "permissions")
 @XmlAccessorType(XmlAccessType.FIELD)
-public class Permission
+public class Permission implements Serializable
 {
 
+  /** Field description */
+  private static final long serialVersionUID = -2915175031430884040L;
+
+  //~--- constructors ---------------------------------------------------------
+
   /**
    * Constructs ...
    *