diff --git a/openbis/source/java/ch/systemsx/cisd/openbis/generic/shared/basic/TechId.java b/openbis/source/java/ch/systemsx/cisd/openbis/generic/shared/basic/TechId.java
index 970746362f1a81ab8a1841e288159f56bd688e96..88137086231cf723d0025ab9846ccde26d5b2455 100644
--- a/openbis/source/java/ch/systemsx/cisd/openbis/generic/shared/basic/TechId.java
+++ b/openbis/source/java/ch/systemsx/cisd/openbis/generic/shared/basic/TechId.java
@@ -16,13 +16,10 @@
 
 package ch.systemsx.cisd.openbis.generic.shared.basic;
 
-import java.io.Serializable;
 import java.util.ArrayList;
 import java.util.Collection;
 import java.util.List;
 
-import com.google.gwt.user.client.rpc.IsSerializable;
-
 import ch.systemsx.cisd.openbis.generic.shared.basic.dto.ServiceVersionHolder;
 
 /**
@@ -30,7 +27,7 @@ import ch.systemsx.cisd.openbis.generic.shared.basic.dto.ServiceVersionHolder;
  * 
  * @author Piotr Buczek
  */
-public class TechId implements IIdHolder, IsSerializable, Serializable
+public class TechId implements IIdHolder, ISerializable
 {
     private static final long serialVersionUID = ServiceVersionHolder.VERSION;