diff --git a/drivers/mtd/maps/Kconfig b/drivers/mtd/maps/Kconfig
index a592fc04cf78..93dcb780db4b 100644
--- a/drivers/mtd/maps/Kconfig
+++ b/drivers/mtd/maps/Kconfig
@@ -576,7 +576,7 @@ config MTD_BAST_MAXSIZE
 	default "4"
 
 config MTD_SHARP_SL
-	bool "ROM mapped on Sharp SL Series"
+	tristate "ROM mapped on Sharp SL Series"
 	depends on ARCH_PXA
 	help
 	  This enables access to the flash chip on the Sharp SL Series of PDAs.