diff --git a/target/linux/realtek/rtl931x/config-6.6 b/target/linux/realtek/rtl931x/config-6.6
index 2da27941c7..736f472029 100644
--- a/target/linux/realtek/rtl931x/config-6.6
+++ b/target/linux/realtek/rtl931x/config-6.6
@@ -11,6 +11,7 @@ CONFIG_BOARD_SCACHE=y
 CONFIG_CEVT_RTL9300=y
 CONFIG_CLKSRC_MIPS_GIC=y
 CONFIG_CLOCKSOURCE_WATCHDOG=y
+CONFIG_CLOCKSOURCE_WATCHDOG_MAX_SKEW_US=125
 CONFIG_CLONE_BACKWARDS=y
 CONFIG_COMMON_CLK=y
 # CONFIG_COMMON_CLK_REALTEK is not set