diff --git a/drivers/of/of_mtd.c b/drivers/of/of_mtd.c
index e7cad627a5d..a27ec94877e 100644
--- a/drivers/of/of_mtd.c
+++ b/drivers/of/of_mtd.c
@@ -32,7 +32,7 @@ static const char *nand_ecc_modes[] = {
  * The function gets ecc mode string from property 'nand-ecc-mode',
  * and return its index in nand_ecc_modes table, or errno in error case.
  */
-const int of_get_nand_ecc_mode(struct device_node *np)
+int of_get_nand_ecc_mode(struct device_node *np)
 {
 	const char *pm;
 	int err, i;
diff --git a/include/linux/of_mtd.h b/include/linux/of_mtd.h
index bae1b6094c6..ed7f267e638 100644
--- a/include/linux/of_mtd.h
+++ b/include/linux/of_mtd.h
@@ -11,7 +11,7 @@
 
 #ifdef CONFIG_OF_MTD
 #include <linux/of.h>
-extern const int of_get_nand_ecc_mode(struct device_node *np);
+int of_get_nand_ecc_mode(struct device_node *np);
 int of_get_nand_bus_width(struct device_node *np);
 bool of_get_nand_on_flash_bbt(struct device_node *np);
 #endif