diff --git a/rails-migrations.md b/rails-migrations.md
index b15998ab7..2ac398998 100644
--- a/rails-migrations.md
+++ b/rails-migrations.md
@@ -6,7 +6,10 @@ category: Rails
 ### Automatically make migrations
 
     $ rails generate migration RemovePartNumberFromProducts part_number:string
+    $ rails generate migration remove_part_number_from_products part_number # rails assumes string if not type given
+    
     $ rails generate migration AddNameToWidgets name:string
+    $ rails generate migration add_name_to_widgets name:string
 
 ### Run migrations