diff --git a/8_using_null.sql b/8_using_null.sql
index 939c9eb..ded1dde 100644
--- a/8_using_null.sql
+++ b/8_using_null.sql
@@ -24,8 +24,9 @@ SELECT name, COALESCE(mobile, '07986 444 2266')
 -- # 6. Use the COALESCE function and a LEFT JOIN to print the name and
 -- #department name. Use the string 'None' where there is no
 -- #department.
-SELECT name, COALESCE(dept, 'None')
-  FROM teacher;
+SELECT teacher.name, COALESCE(dept.name,'None')
+ FROM teacher LEFT JOIN dept
+              ON teacher.dept=dept.id
 
 -- # 7. Use COUNT to show the number of teachers and the number of
 -- #mobile phones.
@@ -62,4 +63,4 @@ SELECT teacher.name,
   THEN 'Art'
   ELSE 'None'
   END
-FROM teacher;
\ No newline at end of file
+FROM teacher;