diff --git a/db/migrate/20150922125415_add_hide_file_tree_to_exercises.rb b/db/migrate/20150922125415_add_hide_file_tree_to_exercises.rb
new file mode 100644
index 00000000..9890c35b
--- /dev/null
+++ b/db/migrate/20150922125415_add_hide_file_tree_to_exercises.rb
@@ -0,0 +1,5 @@
+class AddHideFileTreeToExercises < ActiveRecord::Migration
+  def change
+    add_column :exercises, :hide_file_tree, :boolean
+  end
+end