diff --git a/Rover/Rover.h b/Rover/Rover.h
index 4eac85ade3..56e590df83 100644
--- a/Rover/Rover.h
+++ b/Rover/Rover.h
@@ -159,7 +159,9 @@ private:
 
     AP_L1_Control L1_controller{ahrs, nullptr};
 
+#if AP_OPTICALFLOW_ENABLED
     OpticalFlow optflow;
+#endif
 
 #if OSD_ENABLED || OSD_PARAM_ENABLED
     AP_OSD osd;