diff --git a/libraries/AP_HAL/AP_HAL_Boards.h b/libraries/AP_HAL/AP_HAL_Boards.h
index 9c663b959f..153f0833ec 100644
--- a/libraries/AP_HAL/AP_HAL_Boards.h
+++ b/libraries/AP_HAL/AP_HAL_Boards.h
@@ -165,10 +165,6 @@
 #define HAL_HAVE_IMU_HEATER 0
 #endif
 
-#ifndef HAL_RANGEFINDER_LIGHTWARE_I2C_BUS
-#define HAL_RANGEFINDER_LIGHTWARE_I2C_BUS 1
-#endif
-
 #ifndef HAL_COMPASS_HMC5843_I2C_ADDR
 #define HAL_COMPASS_HMC5843_I2C_ADDR 0x1E
 #endif