diff --git a/src/mainboard/google/rush_ryu/Kconfig b/src/mainboard/google/rush_ryu/Kconfig
index bb5ba931b4..fcbab86f80 100644
--- a/src/mainboard/google/rush_ryu/Kconfig
+++ b/src/mainboard/google/rush_ryu/Kconfig
@@ -25,6 +25,7 @@ config BOARD_SPECIFIC_OPTIONS # dummy
 	select CHROMEOS
 	select EC_GOOGLE_CHROMEEC
 	select EC_GOOGLE_CHROMEEC_I2C
+	select EC_GOOGLE_CHROMEEC_I2C_PROTO3
 	select EC_SOFTWARE_SYNC
 	select SPI_FLASH
 	select SOC_NVIDIA_TEGRA132