diff --git a/code/espurna/config/arduino.h b/code/espurna/config/arduino.h
index dcdec570..c6c725b6 100644
--- a/code/espurna/config/arduino.h
+++ b/code/espurna/config/arduino.h
@@ -73,6 +73,7 @@
 //#define ITEAD_SONOFF_RF
 //#define ITEAD_SONOFF_RFBRIDGE
 //#define ITEAD_SONOFF_S31
+//#define ITEAD_SONOFF_S31_LITE
 //#define ITEAD_SONOFF_SV
 //#define ITEAD_SONOFF_T1_1CH
 //#define ITEAD_SONOFF_T1_2CH