diff --git a/src/drivers/px4flow/px4flow.cpp b/src/drivers/px4flow/px4flow.cpp
index ac20f18327..2166258c15 100644
--- a/src/drivers/px4flow/px4flow.cpp
+++ b/src/drivers/px4flow/px4flow.cpp
@@ -528,7 +528,7 @@ PX4FLOW::start()
 		true,
 		true,
 		true,
-		SUBSYSTEM_TYPE_OPTICALFLOW
+		subsystem_info_s::SUBSYSTEM_TYPE_OPTICALFLOW
 	};
 	static orb_advert_t pub = -1;