# Liquibase modify dbchangelog table

**URL:** <https://forum.liquibase.org/t/liquibase-modify-dbchangelog-table/3243>\
**Category:** General Discussion\
**Created:** [July 1, 2015, 4:39am UTC](https://forum.liquibase.org/t/liquibase-modify-dbchangelog-table/3243 "2015-07-01T04:39:00Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![Paul](https://avatars.discourse-cdn.com/v4/letter/p/bbe5ce/32.png) [@Paul](https://forum.liquibase.org/u/Paul)\
**Post date:** [July 1, 2015, 4:39am UTC](https://forum.liquibase.org/t/liquibase-modify-dbchangelog-table/3243/1 "2015-07-01T04:39:00Z")

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When I run liquibase to generate sql I always get the following lines added to my output file

-- Modifying size of databasechangelog.md5sum column

 

-- Modifying size of databasechangelog.liquibase column

 

ALTER TABLE databasechangelog ALTER COLUMN MD5SUM TYPE VARCHAR(35);

 

ALTER TABLE databasechangelog ALTER COLUMN LIQUIBASE TYPE VARCHAR(20);

 

I am using a postgres database and those columns have been defined as text.

 

Is there an option to not generate these modifications?

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**Author:** ![nvoxland](https://avatars.discourse-cdn.com/v4/letter/n/87869e/32.png) [@nvoxland](https://forum.liquibase.org/u/nvoxland)\
**Post date:** [July 1, 2015, 4:39am UTC](https://forum.liquibase.org/t/liquibase-modify-dbchangelog-table/3243/2 "2015-07-01T04:39:00Z")

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Sorry for the slow response. I’ll put a fix into 3.4.1 to not send alter statements if the type is different

[https://liquibase.jira.com/browse/CORE-2461](https://liquibase.jira.com/browse/CORE-2461)

Nathan