diff --git a/src/mainboard/google/rex/Kconfig b/src/mainboard/google/rex/Kconfig
index 25155e47c9..bb9f2b5792 100644
--- a/src/mainboard/google/rex/Kconfig
+++ b/src/mainboard/google/rex/Kconfig
@@ -162,7 +162,7 @@ config OVERRIDE_DEVICETREE
 
 config DRIVER_TPM_I2C_BUS
 	hex
-	default 0x4 if BOARD_GOOGLE_MODEL_REX || BOARD_GOOGLE_MODEL_SCREEBO || BOARD_GOOGLE_MODEL_OVIS
+	default 0x4 if BOARD_GOOGLE_MODEL_REX || BOARD_GOOGLE_MODEL_SCREEBO || BOARD_GOOGLE_MODEL_OVIS || BOARD_GOOGLE_MODEL_KARIS
 
 config DRIVER_TPM_I2C_ADDR
 	hex