diff --git a/sonoff/user_config.h b/sonoff/user_config.h
index ff9a80092..4a7722025 100644
--- a/sonoff/user_config.h
+++ b/sonoff/user_config.h
@@ -293,7 +293,7 @@
 #define USE_SERIAL_BRIDGE                        // Add support for software Serial Bridge (+0k8 code)
 //#define USE_SDM120                               // Add support for Eastron SDM120-Modbus energy meter (+1k7 code)
   #define SDM120_SPEED         9600              // SDM120-Modbus RS485 serial speed (default: 2400 baud)
-#define USE_SDM630                               // Add support for Eastron SDM630-Modbus energy meter (+2k code)
+//#define USE_SDM630                               // Add support for Eastron SDM630-Modbus energy meter (+2k code)
   #define SDM630_SPEED         9600              // SDM630-Modbus RS485 serial speed (default: 9600 baud)
 
 // -- Low level interface devices -----------------