diff --git a/config/alfresco/dbscripts/upgrade/3.4/org.hibernate.dialect.MySQLInnoDBDialect/property-unique-ctx-value.sql b/config/alfresco/dbscripts/upgrade/3.4/org.hibernate.dialect.MySQLInnoDBDialect/property-unique-ctx-value.sql
index 59ade2332b..2537dbd0a3 100755
--- a/config/alfresco/dbscripts/upgrade/3.4/org.hibernate.dialect.MySQLInnoDBDialect/property-unique-ctx-value.sql
+++ b/config/alfresco/dbscripts/upgrade/3.4/org.hibernate.dialect.MySQLInnoDBDialect/property-unique-ctx-value.sql
@@ -7,10 +7,12 @@
 -- Please contact support@alfresco.com if you need assistance with the upgrade.
 --
 
+-- Optional if upgrading from before 3.2.x
+
 ALTER TABLE alf_prop_unique_ctx
    ADD COLUMN prop1_id BIGINT NULL AFTER value3_prop_id,
    ADD CONSTRAINT fk_alf_propuctx_p1 FOREIGN KEY (prop1_id) REFERENCES alf_prop_root (id)
-;
+; --(optional)
 
 --
 -- Record script finish
diff --git a/config/alfresco/dbscripts/upgrade/3.4/org.hibernate.dialect.PostgreSQLDialect/property-unique-ctx-value.sql b/config/alfresco/dbscripts/upgrade/3.4/org.hibernate.dialect.PostgreSQLDialect/property-unique-ctx-value.sql
index 6f2951aae3..60c9562c36 100755
--- a/config/alfresco/dbscripts/upgrade/3.4/org.hibernate.dialect.PostgreSQLDialect/property-unique-ctx-value.sql
+++ b/config/alfresco/dbscripts/upgrade/3.4/org.hibernate.dialect.PostgreSQLDialect/property-unique-ctx-value.sql
@@ -7,10 +7,13 @@
 -- Please contact support@alfresco.com if you need assistance with the upgrade.
 --
 
+-- Optional if upgrading from before 3.2.x
+
 ALTER TABLE alf_prop_unique_ctx
    ADD COLUMN prop1_id INT8,
    ADD CONSTRAINT fk_alf_propuctx_p1 FOREIGN KEY (prop1_id) REFERENCES alf_prop_root (id)
-;
+; --(optional)
+
 
 --
 -- Record script finish