diff --git a/postgres_dialect.go b/postgres_dialect.go
index 746afbc3..58e8da4f 100644
--- a/postgres_dialect.go
+++ b/postgres_dialect.go
@@ -123,7 +123,7 @@ func (db *postgres) IsColumnExist(tableName string, col *core.Column) (bool, err
 	if rows.Next() {
 		return true, nil
 	}
-	return false, core.ErrNotExist
+	return false, nil
 }
 
 func (db *postgres) GetColumns(tableName string) ([]string, map[string]*core.Column, error) {