diff --git a/libraries/AP_TemperatureSensor/AP_TemperatureSensor_config.h b/libraries/AP_TemperatureSensor/AP_TemperatureSensor_config.h
index 2fdd2f325f..7463d706c1 100644
--- a/libraries/AP_TemperatureSensor/AP_TemperatureSensor_config.h
+++ b/libraries/AP_TemperatureSensor/AP_TemperatureSensor_config.h
@@ -9,7 +9,7 @@
 #ifndef AP_TEMPERATURE_SENSOR_ENABLED
 #if BOARD_FLASH_SIZE <= 1024
     #define AP_TEMPERATURE_SENSOR_ENABLED 0
-#elif (CONFIG_HAL_BOARD == HAL_BOARD_SITL)
+#elif BOARD_FLASH_SIZE > 2048
     #define AP_TEMPERATURE_SENSOR_ENABLED 1
 #else
     #define AP_TEMPERATURE_SENSOR_ENABLED 2