diff --git a/db/migrate/20120605180148_remove_unused_tables.rb b/db/migrate/20120605180148_remove_unused_tables.rb
new file mode 100644
index 00000000..aa556dbe
--- /dev/null
+++ b/db/migrate/20120605180148_remove_unused_tables.rb
@@ -0,0 +1,21 @@
+class RemoveUnusedTables < ActiveRecord::Migration
+  def up
+    drop_table :cloners
+    drop_table :committerships
+    drop_table :group_has_users
+    drop_table :groups
+    drop_table :memberships
+    drop_table :merge_requests
+    drop_table :merge_requests_statuses
+    drop_table :merge_requests_versions
+    drop_table :projects
+    drop_table :registered_course_has_lab_groups
+    drop_table :sites
+    drop_table :ssh_keys
+    drop_table :taggings
+    drop_table :tags
+  end
+
+  def down
+  end
+end