diff --git a/others/db_changes/data_alias/basic/2019.2/removeTaskCode.xml b/others/db_changes/data_alias/basic/2019.2/removeTaskCode.xml
index 77bb7e789f09aea4f268a4f50b79d7c9c9de5780..6ec2c773c5db07904d0302f9d16fa92f03da0863 100644
--- a/others/db_changes/data_alias/basic/2019.2/removeTaskCode.xml
+++ b/others/db_changes/data_alias/basic/2019.2/removeTaskCode.xml
@@ -1,7 +1,7 @@
 <?xml version="1.1" encoding="UTF-8" standalone="no"?>
 <databaseChangeLog xmlns="http://www.liquibase.org/xml/ns/dbchangelog" xmlns:ext="http://www.liquibase.org/xml/ns/dbchangelog-ext" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://www.liquibase.org/xml/ns/dbchangelog-ext http://www.liquibase.org/xml/ns/dbchangelog/dbchangelog-ext.xsd http://www.liquibase.org/xml/ns/dbchangelog http://www.liquibase.org/xml/ns/dbchangelog/dbchangelog-3.6.xsd">
 <changeSet author="j.goderbauer" id="598345d1-691b-4cae-b1c0-44c9c48705c8">
-    <dropNotNullConstraint tableName="TASK" columnName="CODE" />
+    <dropNotNullConstraint tableName="TASK" columnName="CODE" columnDataType="INTEGER"/>
     <update tableName="TASK">
         <column name="CODE"/>
     </update>