diff --git a/libraries/AP_HAL_ChibiOS/hwdef/f103-RangeFinder/hwdef.dat b/libraries/AP_HAL_ChibiOS/hwdef/f103-RangeFinder/hwdef.dat
index 104433c6fa..2cb20c766e 100644
--- a/libraries/AP_HAL_ChibiOS/hwdef/f103-RangeFinder/hwdef.dat
+++ b/libraries/AP_HAL_ChibiOS/hwdef/f103-RangeFinder/hwdef.dat
@@ -8,7 +8,7 @@ define AIRSPEED_MAX_SENSORS 1
 
 define HAL_PERIPH_ENABLE_RANGEFINDER
 
-define HAL_PERIPH_RANGEFINDER_PORT_DEFAULT 3
+define AP_PERIPH_RANGEFINDER_PORT_DEFAULT 3
 
 # we're too low on flash with old compiler for bootloader
 define HAL_NO_ROMFS_SUPPORT