diff --git a/drivers/mtd/mtd_blkdevs.c b/drivers/mtd/mtd_blkdevs.c
index 302bed5f0845..458d3c8ae1ee 100644
--- a/drivers/mtd/mtd_blkdevs.c
+++ b/drivers/mtd/mtd_blkdevs.c
@@ -69,7 +69,7 @@ static int do_blktrans_request(struct mtd_blktrans_ops *tr,
 		return 1;
 
 	default:
-		printk(KERN_NOTICE "Unknown request %d\n", rq_data_dir(req));
+		printk(KERN_NOTICE "Unknown request %ld\n", rq_data_dir(req));
 		return 0;
 	}
 }