diff --git a/target/linux/realtek/config-4.9 b/target/linux/realtek/config-4.9
index 0273c2a6bd..b12fff6717 100644
--- a/target/linux/realtek/config-4.9
+++ b/target/linux/realtek/config-4.9
@@ -858,7 +858,7 @@ CONFIG_USB_EHCI_HCD=y
 # CONFIG_USB_EHCI_HCD_PLATFORM is not set
 CONFIG_USB_EHCI_RTK=y
 CONFIG_USB_OHCI_RTK=y
-CONFIG_USB_RTK_UDC=y
+# CONFIG_USB_RTK_UDC is not set
 # CONFIG_USB_RTK_UDC_OTG_SWITCH is not set
 CONFIG_USB_F_ECM=y
 CONFIG_USB_F_EEM=y