=== modified file 'dhis-2/dhis-api/src/main/java/org/hisp/dhis/user/User.java'
--- dhis-2/dhis-api/src/main/java/org/hisp/dhis/user/User.java	2014-02-03 14:30:41 +0000
+++ dhis-2/dhis-api/src/main/java/org/hisp/dhis/user/User.java	2014-02-03 14:40:26 +0000
@@ -28,12 +28,12 @@
  * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  */
 
-import com.fasterxml.jackson.annotation.JsonProperty;
-import com.fasterxml.jackson.annotation.JsonView;
-import com.fasterxml.jackson.databind.annotation.JsonSerialize;
-import com.fasterxml.jackson.dataformat.xml.annotation.JacksonXmlElementWrapper;
-import com.fasterxml.jackson.dataformat.xml.annotation.JacksonXmlProperty;
-import com.fasterxml.jackson.dataformat.xml.annotation.JacksonXmlRootElement;
+import java.util.ArrayList;
+import java.util.Date;
+import java.util.HashSet;
+import java.util.List;
+import java.util.Set;
+
 import org.apache.commons.collections.CollectionUtils;
 import org.hisp.dhis.attribute.AttributeValue;
 import org.hisp.dhis.common.BaseIdentifiableObject;
@@ -45,12 +45,12 @@
 import org.hisp.dhis.common.view.ExportView;
 import org.hisp.dhis.organisationunit.OrganisationUnit;
 
-import java.util.ArrayList;
-import java.util.Collection;
-import java.util.Date;
-import java.util.HashSet;
-import java.util.List;
-import java.util.Set;
+import com.fasterxml.jackson.annotation.JsonProperty;
+import com.fasterxml.jackson.annotation.JsonView;
+import com.fasterxml.jackson.databind.annotation.JsonSerialize;
+import com.fasterxml.jackson.dataformat.xml.annotation.JacksonXmlElementWrapper;
+import com.fasterxml.jackson.dataformat.xml.annotation.JacksonXmlProperty;
+import com.fasterxml.jackson.dataformat.xml.annotation.JacksonXmlRootElement;
 
 /**
  * @author Nguyen Hong Duc
@@ -429,7 +429,7 @@
     @JsonView( { DetailedView.class, ExportView.class } )
     @JacksonXmlElementWrapper( localName = "organisationUnits", namespace = DxfNamespaces.DXF_2_0 )
     @JacksonXmlProperty( localName = "organisationUnit", namespace = DxfNamespaces.DXF_2_0 )
-    public Collection<OrganisationUnit> getOrganisationUnits()
+    public Set<OrganisationUnit> getOrganisationUnits()
     {
         return organisationUnits;
     }