diff --git a/src/mainboard/google/brox/Kconfig b/src/mainboard/google/brox/Kconfig
index a94995a168..9a22731a94 100644
--- a/src/mainboard/google/brox/Kconfig
+++ b/src/mainboard/google/brox/Kconfig
@@ -124,6 +124,7 @@ config DRIVER_TPM_I2C_BUS
 config PL4_LIMIT_FOR_CRITICAL_BAT_BOOT
 	int
 	default 9 if BOARD_GOOGLE_BROX
+	default 9 if BOARD_GOOGLE_BROX_RTK_EC
 	default 14 if BOARD_GOOGLE_JUBILANT
 	default 40 if BOARD_GOOGLE_LOTSO
 	help