diff --git a/migration/i2.0z/oracle/201405301604_IDEMPIERE-1973.sql b/migration/i2.0z/oracle/201405301604_IDEMPIERE-1973.sql
index 1433048bb1..3eaca7d80c 100644
--- a/migration/i2.0z/oracle/201405301604_IDEMPIERE-1973.sql
+++ b/migration/i2.0z/oracle/201405301604_IDEMPIERE-1973.sql
@@ -65,7 +65,7 @@ UPDATE AD_Field SET SeqNo=250,Updated=TO_DATE('2014-05-30 22:06:40','YYYY-MM-DD
 UPDATE ad_infocolumn SET ismandatory = 'N'
 ;
 
-ALTER TABLE ad_infocolumn ALTER COLUMN ismandatory SET NOT NULL
+ALTER TABLE ad_infocolumn MODIFY (ismandatory CHAR(1) NOT NULL)
 ;
 -- Jun 11, 2014 8:59:36 AM ICT
 -- I forgot to set the DICTIONARY_ID_COMMENTS System Configurator