diff --git a/openbis/source/java/ch/systemsx/cisd/openbis/generic/shared/dto/PersonPE.java b/openbis/source/java/ch/systemsx/cisd/openbis/generic/shared/dto/PersonPE.java
index 6d42a9b0eccad98be038c94b6fc26a7536630df0..ab8d38453cada720b8a07cc4cf3b544a6a64353b 100644
--- a/openbis/source/java/ch/systemsx/cisd/openbis/generic/shared/dto/PersonPE.java
+++ b/openbis/source/java/ch/systemsx/cisd/openbis/generic/shared/dto/PersonPE.java
@@ -273,6 +273,7 @@ public final class PersonPE extends HibernateAbstractRegistrationHolder implemen
         builder.append("lastName", lastName);
         builder.append("email", email);
         builder.append("systemUser", systemUser);
+        builder.append(getDatabaseInstance());
         return builder.toString();
     }