diff --git a/target/linux/ar7/files/drivers/mtd/ac49xpart.c b/target/linux/ar7/files/drivers/mtd/ac49xpart.c
index 7ac4a817fc..4f8a9c1b84 100644
--- a/target/linux/ar7/files/drivers/mtd/ac49xpart.c
+++ b/target/linux/ar7/files/drivers/mtd/ac49xpart.c
@@ -123,7 +123,7 @@ void gen_partname(unsigned int type,
 }
 
 static int create_mtd_partitions(struct mtd_info *master,
-				 struct mtd_partition **pparts,
+				 const struct mtd_partition **pparts,
 				 struct mtd_part_parser_data *data)
 {
 	unsigned int envpartnum = 0, linuxpartnum = 0;