diff --git a/libraries/AP_RangeFinder/AP_RangeFinder_LeddarVu8.h b/libraries/AP_RangeFinder/AP_RangeFinder_LeddarVu8.h
index e1300f4267..39b46afa5a 100644
--- a/libraries/AP_RangeFinder/AP_RangeFinder_LeddarVu8.h
+++ b/libraries/AP_RangeFinder/AP_RangeFinder_LeddarVu8.h
@@ -27,6 +27,9 @@ protected:
     // get a reading, distance returned in reading_cm
     bool get_reading(uint16_t &reading_cm) override;
 
+    // maximum time between readings before we change state to NoData:
+    uint16_t read_timeout_ms() const override { return 500; }
+
 private:
 
     // function codes