sql error

mysql/sql/init.sql

@@ -79,7 +79,7 @@ CREATE TABLE projects_users (
 CREATE TABLE tasks (
   taskid INT UNSIGNED AUTO_INCREMENT,
   projectid INT UNSIGNED NOT NULL,
-  teamid INT,
+  teamid INT UNSIGNED,
   title VARCHAR(200) NOT NULL,
   task_description VARCHAR(500),
   budget INT NOT NULL,