diff --git a/drivers/mtd/mtdcore.c b/drivers/mtd/mtdcore.c
index 61d5f56473e1..681bb6de6ff9 100644
--- a/drivers/mtd/mtdcore.c
+++ b/drivers/mtd/mtdcore.c
@@ -492,7 +492,7 @@ int del_mtd_device(struct mtd_info *mtd)
  *
  * Returns zero in case of success and a negative error code in case of failure.
  */
-int mtd_device_parse_register(struct mtd_info *mtd, const char **types,
+int mtd_device_parse_register(struct mtd_info *mtd, const char * const *types,
 			      struct mtd_part_parser_data *parser_data,
 			      const struct mtd_partition *parts,
 			      int nr_parts)
diff --git a/drivers/mtd/mtdcore.h b/drivers/mtd/mtdcore.h
index 961a38408542..62bf5ac42209 100644
--- a/drivers/mtd/mtdcore.h
+++ b/drivers/mtd/mtdcore.h
@@ -15,7 +15,8 @@ extern int del_mtd_device(struct mtd_info *mtd);
 extern int add_mtd_partitions(struct mtd_info *, const struct mtd_partition *,
 			      int);
 extern int del_mtd_partitions(struct mtd_info *);
-extern int parse_mtd_partitions(struct mtd_info *master, const char **types,
+extern int parse_mtd_partitions(struct mtd_info *master,
+				const char * const *types,
 				struct mtd_partition **pparts,
 				struct mtd_part_parser_data *data);
 
diff --git a/drivers/mtd/mtdpart.c b/drivers/mtd/mtdpart.c
index 70fa70a8318f..9ee0911025c8 100644
--- a/drivers/mtd/mtdpart.c
+++ b/drivers/mtd/mtdpart.c
@@ -720,7 +720,7 @@ static const char *default_mtd_part_types[] = {
  * o a positive number of found partitions, in which case on exit @pparts will
  *   point to an array containing this number of &struct mtd_info objects.
  */
-int parse_mtd_partitions(struct mtd_info *master, const char **types,
+int parse_mtd_partitions(struct mtd_info *master, const char *const *types,
 			 struct mtd_partition **pparts,
 			 struct mtd_part_parser_data *data)
 {
diff --git a/include/linux/mtd/mtd.h b/include/linux/mtd/mtd.h
index f9ac2897b86b..a5cf4e8d6818 100644
--- a/include/linux/mtd/mtd.h
+++ b/include/linux/mtd/mtd.h
@@ -362,10 +362,10 @@ struct mtd_partition;
 struct mtd_part_parser_data;
 
 extern int mtd_device_parse_register(struct mtd_info *mtd,
-			      const char **part_probe_types,
-			      struct mtd_part_parser_data *parser_data,
-			      const struct mtd_partition *defparts,
-			      int defnr_parts);
+				     const char * const *part_probe_types,
+				     struct mtd_part_parser_data *parser_data,
+				     const struct mtd_partition *defparts,
+				     int defnr_parts);
 #define mtd_device_register(master, parts, nr_parts)	\
 	mtd_device_parse_register(master, NULL, NULL, parts, nr_parts)
 extern int mtd_device_unregister(struct mtd_info *master);