diff --git a/ccm-cms-publicpersonalprofile/src/com/arsdigita/cms/contenttypes/ui/PublicPersonalProfileNavigationTable.java b/ccm-cms-publicpersonalprofile/src/com/arsdigita/cms/contenttypes/ui/PublicPersonalProfileNavigationTable.java
index df9f39b09..1a22dac25 100644
--- a/ccm-cms-publicpersonalprofile/src/com/arsdigita/cms/contenttypes/ui/PublicPersonalProfileNavigationTable.java
+++ b/ccm-cms-publicpersonalprofile/src/com/arsdigita/cms/contenttypes/ui/PublicPersonalProfileNavigationTable.java
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2011 Jens Pelzetter
+ * Copyright (c) 2011, 2013 Jens Pelzetter
  *
  * This library is free software; you can redistribute it and/or
  * modify it under the terms of the GNU Lesser General Public License
diff --git a/ccm-navigation/src/com/arsdigita/navigation/ui/object/CategoryFilter.java b/ccm-navigation/src/com/arsdigita/navigation/ui/object/CategoryFilter.java
index e754fea8c..722b8784b 100644
--- a/ccm-navigation/src/com/arsdigita/navigation/ui/object/CategoryFilter.java
+++ b/ccm-navigation/src/com/arsdigita/navigation/ui/object/CategoryFilter.java
@@ -22,6 +22,7 @@ public class CategoryFilter {
 
     private final String label;
     private String separator = " ";
+    private boolean multiple = true;
     private final Category filterRootCat;
     private final List<String> values = new ArrayList<String>();
     private final Map<String, String> catNameToCatId = new HashMap<String, String>();
@@ -101,6 +102,12 @@ public class CategoryFilter {
         filter.newChildElement("searchString").setText(searchString.toString());
         filter.newChildElement("categoriesStr").setText(categoriesStr.toString());
         filter.newChildElement("separator").setText(separator);
+        final Element multipleElem = filter.newChildElement("multiple");
+        if (multiple) {
+            multipleElem.setText("true");
+        } else {
+            multipleElem.setText("false");
+        }
         
         for (String value : values) {
             if (!catNameToCatId.containsKey(value)) {
@@ -145,6 +152,14 @@ public class CategoryFilter {
     public void setSeparator(final String separator) {
         this.separator = separator;
     }
+    
+    public boolean isMultiple() {
+        return multiple;
+    }
+    
+    public void setMultiple(final boolean multiple) {
+        this.multiple = multiple;
+    }
 
     public void setValue(final String value) {
         if ((value != null) && !value.isEmpty()) {