diff --git a/libraries/DataFlash/DataFlash.h b/libraries/DataFlash/DataFlash.h
index 86b542109d..3993362022 100644
--- a/libraries/DataFlash/DataFlash.h
+++ b/libraries/DataFlash/DataFlash.h
@@ -18,6 +18,7 @@
 #include <AP_Airspeed/AP_Airspeed.h>
 #include <AP_BattMonitor/AP_BattMonitor.h>
 #include <AP_RPM/AP_RPM.h>
+#include <AP_RangeFinder/AP_RangeFinder.h>
 #include <stdint.h>
 
 #if CONFIG_HAL_BOARD == HAL_BOARD_PX4