diff --git a/drivers/md/dm.c b/drivers/md/dm.c
index 724efc6..473f0c3 100644
--- a/drivers/md/dm.c
+++ b/drivers/md/dm.c
@@ -275,6 +275,7 @@
 	dm_target_init,
 	dm_linear_init,
 	dm_stripe_init,
+	dm_io_init,
 	dm_kcopyd_init,
 	dm_interface_init,
 };
@@ -284,6 +285,7 @@
 	dm_target_exit,
 	dm_linear_exit,
 	dm_stripe_exit,
+	dm_io_exit,
 	dm_kcopyd_exit,
 	dm_interface_exit,
 };