diff --git a/config/alfresco/dbscripts/upgrade/2.1/org.hibernate.dialect.Dialect/AlfrescoSchemaUpdate-2.1-JBPMProcessKey.sql b/config/alfresco/dbscripts/upgrade/2.1/org.hibernate.dialect.Dialect/AlfrescoSchemaUpdate-2.1-JBPMProcessKey.sql
index 76bc35de1c..5ea031588d 100644
--- a/config/alfresco/dbscripts/upgrade/2.1/org.hibernate.dialect.Dialect/AlfrescoSchemaUpdate-2.1-JBPMProcessKey.sql
+++ b/config/alfresco/dbscripts/upgrade/2.1/org.hibernate.dialect.Dialect/AlfrescoSchemaUpdate-2.1-JBPMProcessKey.sql
@@ -7,7 +7,7 @@
 -- Please contact support@alfresco.com if you need assistance with the upgrade.
 -- 
 
-UPDATE JBPM_PROCESSINSTANCE SET KEY_ = '' || ID_ WHERE KEY_ IS NULL;
+UPDATE JBPM_PROCESSINSTANCE SET KEY_ = ID_ WHERE KEY_ IS NULL;
 
 --
 -- Record script finish