diff --git a/src/main/resources/update/1_3.sql b/src/main/resources/update/1_3.sql
index aa0c0bc..59ab009 100644
--- a/src/main/resources/update/1_3.sql
+++ b/src/main/resources/update/1_3.sql
@@ -1,5 +1,8 @@
 ALTER TABLE ACCOUNT ADD COLUMN IMAGE VARCHAR(100);
 
-ALTER TABLE COMMENT ALTER COLUMN ACTION VARCHAR(20);
-UPDATE COMMENT SET ACTION = 'close_comment'  WHERE ACTION = 'close';
-UPDATE COMMENT SET ACTION = 'reopen_comment' WHERE ACTION = 'reopen';
+UPDATE ISSUE_COMMENT SET ACTION = 'comment' WHERE ACTION IS NULL;
+
+ALTER TABLE ISSUE_COMMENT ALTER COLUMN ACTION VARCHAR(20) NOT NULL;
+
+UPDATE ISSUE_COMMENT SET ACTION = 'close_comment'  WHERE ACTION = 'close';
+UPDATE ISSUE_COMMENT SET ACTION = 'reopen_comment' WHERE ACTION = 'reopen';