diff --git a/target/linux/ipq806x/config-4.9 b/target/linux/ipq806x/config-4.9
index bca4264c8f..a71b1b819b 100644
--- a/target/linux/ipq806x/config-4.9
+++ b/target/linux/ipq806x/config-4.9
@@ -190,6 +190,8 @@ CONFIG_GENERIC_TIME_VSYSCALL=y
 CONFIG_GPIOLIB=y
 CONFIG_GPIOLIB_IRQCHIP=y
 CONFIG_GPIO_SYSFS=y
+CONFIG_GPIO_WATCHDOG=y
+# CONFIG_GPIO_WATCHDOG_ARCH_INITCALL is not set
 CONFIG_HANDLE_DOMAIN_IRQ=y
 CONFIG_HARDIRQS_SW_RESEND=y
 CONFIG_HAS_DMA=y