diff --git a/package/kernel/linux/modules/other.mk b/package/kernel/linux/modules/other.mk
index 9bb9dec2bc448868b91466e3fab6dffeb95910a5..62fdc3cd69395841a5e19509b46e96553a0f8426 100644
--- a/package/kernel/linux/modules/other.mk
+++ b/package/kernel/linux/modules/other.mk
@@ -820,7 +820,9 @@ define KernelPackage/ptp
   SUBMENU:=$(OTHER_MENU)
   TITLE:=PTP clock support
   DEPENDS:=+kmod-pps
-  KCONFIG:=CONFIG_PTP_1588_CLOCK
+  KCONFIG:= \
+	CONFIG_PTP_1588_CLOCK \
+	CONFIG_NET_PTP_CLASSIFY=y
   FILES:=$(LINUX_DIR)/drivers/ptp/ptp.ko
   AUTOLOAD:=$(call AutoLoad,18,ptp,1)
 endef