diff --git a/src/mainboard/google/lars/Kconfig b/src/mainboard/google/lars/Kconfig
index 4a1bce9db2..70e6726a3a 100644
--- a/src/mainboard/google/lars/Kconfig
+++ b/src/mainboard/google/lars/Kconfig
@@ -9,7 +9,6 @@ config BOARD_SPECIFIC_OPTIONS # dummy
 	select EC_GOOGLE_CHROMEEC_LPC
 	select EC_GOOGLE_CHROMEEC_MEC
 	select EC_GOOGLE_CHROMEEC_PD
-	select EC_SOFTWARE_SYNC
 	select HAVE_ACPI_RESUME
 	select HAVE_ACPI_TABLES
 	select HAVE_OPTION_TABLE
@@ -25,6 +24,7 @@ config CHROMEOS
 	select LID_SWITCH
 	select VBOOT_OPROM_MATTERS
 	select VIRTUAL_DEV_SWITCH
+	select EC_SOFTWARE_SYNC
 
 config IRQ_SLOT_COUNT
 	int
diff --git a/src/mainboard/intel/kunimitsu/Kconfig b/src/mainboard/intel/kunimitsu/Kconfig
index 4132e86e0c..5a5b3cdc85 100644
--- a/src/mainboard/intel/kunimitsu/Kconfig
+++ b/src/mainboard/intel/kunimitsu/Kconfig
@@ -9,7 +9,6 @@ config BOARD_SPECIFIC_OPTIONS # dummy
 	select EC_GOOGLE_CHROMEEC_LPC
 	select EC_GOOGLE_CHROMEEC_MEC
 	select EC_GOOGLE_CHROMEEC_PD
-	select EC_SOFTWARE_SYNC
 	select HAVE_ACPI_RESUME
 	select HAVE_ACPI_TABLES
 	select HAVE_OPTION_TABLE
@@ -25,6 +24,7 @@ config CHROMEOS
 	select LID_SWITCH
 	select VBOOT_OPROM_MATTERS
 	select VIRTUAL_DEV_SWITCH
+	select EC_SOFTWARE_SYNC
 
 config IRQ_SLOT_COUNT
 	int