diff --git a/sonoff/my_user_config.h b/sonoff/my_user_config.h
index e1f6e364a..2145d0458 100644
--- a/sonoff/my_user_config.h
+++ b/sonoff/my_user_config.h
@@ -356,6 +356,7 @@
   #define MP3_VOLUME           10                // Set the startup volume on init, the range can be 0..30(max)
 #define USE_TUYA_DIMMER                          // Add support for Tuya Serial Dimmer
   #define TUYA_DIMMER_ID       0                 // Default dimmer Id
+#define USE_ARMTRONIX_DIMMERS                     //Add support for Armtronix Dimmers
 
 // Power monitoring sensors -----------------------
 #define USE_PZEM004T                             // Add support for PZEM004T Energy monitor (+2k code)