diff --git a/drivers/net/phy/Kconfig b/drivers/net/phy/Kconfig
index cf18940f4e84f5352a6dffe7a72548d72ef3a011..cb86d7a0154228f5c3711898072a0e5f5d4d6a81 100644
--- a/drivers/net/phy/Kconfig
+++ b/drivers/net/phy/Kconfig
@@ -191,7 +191,7 @@ config MDIO_BUS_MUX_GPIO
 
 config MDIO_BUS_MUX_MMIOREG
 	tristate "Support for MMIO device-controlled MDIO bus multiplexers"
-	depends on OF_MDIO
+	depends on OF_MDIO && HAS_IOMEM
 	select MDIO_BUS_MUX
 	help
 	  This module provides a driver for MDIO bus multiplexers that