diff --git a/drivers/mtd/rfd_ftl.c b/drivers/mtd/rfd_ftl.c
index 823fba4..c84e454 100644
--- a/drivers/mtd/rfd_ftl.c
+++ b/drivers/mtd/rfd_ftl.c
@@ -823,7 +823,7 @@
 	kfree(part);
 }
 
-struct mtd_blktrans_ops rfd_ftl_tr = {
+static struct mtd_blktrans_ops rfd_ftl_tr = {
 	.name		= "rfd",
 	.major		= RFD_FTL_MAJOR,
 	.part_bits	= PART_BITS,