diff --git a/drivers/mtd/mtdraw.c b/drivers/mtd/mtdraw.c
index b06eb18..d0b5f75 100644
--- a/drivers/mtd/mtdraw.c
+++ b/drivers/mtd/mtdraw.c
@@ -281,7 +281,7 @@
 {
 	return 0;
 }
-static ssize_t mtdraw_erase(struct cdev *cdev, size_t count, loff_t offset)
+static ssize_t mtdraw_erase(struct cdev *cdev, loff_t count, loff_t offset)
 {
 	return 0;
 }