diff --git a/init/do_mounts_md.c b/init/do_mounts_md.c
index 48b3fadd83ed90f846555079d02e87e9d708af0c..4c87ee1fe5d30fe1783f0800fde7e3888aad298e 100644
--- a/init/do_mounts_md.c
+++ b/init/do_mounts_md.c
@@ -1,5 +1,6 @@
 
 #include <linux/raid/md.h>
+#include <linux/delay.h>
 
 #include "do_mounts.h"