diff --git a/sonoff/my_user_config.h b/sonoff/my_user_config.h
index 20aab5626..8f06007ca 100644
--- a/sonoff/my_user_config.h
+++ b/sonoff/my_user_config.h
@@ -354,6 +354,7 @@
   #define USE_SPS30                              // Enable Sensiron SPS30 particle sensor (I2C address 0x69) (+1.7 code)
   #define USE_ADE7953                            // Enable ADE7953 Energy monitor as used on Shelly 2.5 (I2C address 0x38) (+1k5)
   #define USE_VL53L0X                            // Enable VL53L0x time of flight sensor (I2C address 0x29) (+4k code)
+  #define USE_MLX90614                           // Enable MLX90614 ir temp sensor (I2C address 0x5a) (+0.6k code)
 
 //  #define USE_DISPLAY                            // Add I2C Display Support (+2k code)
     #define USE_DISPLAY_MODES1TO5                // Enable display mode 1 to 5 in addition to mode 0