diff --git a/libraries/AP_Proximity/AP_Proximity_RPLidarA2.h b/libraries/AP_Proximity/AP_Proximity_RPLidarA2.h
index e4fa83304514d3..c8b7e405fa31b6 100644
--- a/libraries/AP_Proximity/AP_Proximity_RPLidarA2.h
+++ b/libraries/AP_Proximity/AP_Proximity_RPLidarA2.h
@@ -58,6 +58,9 @@ class AP_Proximity_RPLidarA2 : public AP_Proximity_Backend_Serial
     // update state
     void update(void) override;
 
+    // increase receive buffer size
+    uint16_t rxspace() const override { return 1280; };
+
     // get maximum and minimum distances (in meters) of sensor
     float distance_max() const override;
     float distance_min() const override;