diff --git a/postgres/add-on-delete-cascade-to-foreign-key-constraint.md b/postgres/add-on-delete-cascade-to-foreign-key-constraint.md
index a4ebec9..e339010 100644
--- a/postgres/add-on-delete-cascade-to-foreign-key-constraint.md
+++ b/postgres/add-on-delete-cascade-to-foreign-key-constraint.md
@@ -15,10 +15,10 @@ Here is an example:
 ```sql
 begin;
 
-alter table
+alter table orders
 drop constraint orders_customer_id_fkey;
 
-alter table
+alter table orders
 add constraint orders_customer_id_fkey
 foreign key (customer_id)
 references customers (id)