diff --git a/libraries/AP_Airspeed/AP_Airspeed.cpp b/libraries/AP_Airspeed/AP_Airspeed.cpp
index 75d5a8688d..6c5d53f214 100644
--- a/libraries/AP_Airspeed/AP_Airspeed.cpp
+++ b/libraries/AP_Airspeed/AP_Airspeed.cpp
@@ -45,8 +45,12 @@ extern const AP_HAL::HAL &hal;
  #define ARSPD_DEFAULT_PIN 15
 #else
  #define ARSPD_DEFAULT_TYPE TYPE_I2C_MS4525
+#ifdef HAL_DEFAULT_AIRSPEED_PIN
+ #define ARSPD_DEFAULT_PIN HAL_DEFAULT_AIRSPEED_PIN
+#else
  #define ARSPD_DEFAULT_PIN 15
 #endif
+#endif
 
 #if CONFIG_HAL_BOARD_SUBTYPE == HAL_BOARD_SUBTYPE_LINUX_DISCO
 #define PSI_RANGE_DEFAULT 0.05