diff --git a/drivers/mtd/nand/at91_nand.c b/drivers/mtd/nand/at91_nand.c
index 7ea1a74a52b7..463632ed794c 100644
--- a/drivers/mtd/nand/at91_nand.c
+++ b/drivers/mtd/nand/at91_nand.c
@@ -83,7 +83,7 @@ static void at91_nand_disable(struct at91_nand_host *host)
 }
 
 #ifdef CONFIG_MTD_PARTITIONS
-const char *part_probes[] = { "cmdlinepart", NULL };
+static const char *part_probes[] = { "cmdlinepart", NULL };
 #endif
 
 /*