diff --git a/src/drivers/rc/crsf_rc/CrsfRc.cpp b/src/drivers/rc/crsf_rc/CrsfRc.cpp
index 77584f5fc0..1423f2398c 100644
--- a/src/drivers/rc/crsf_rc/CrsfRc.cpp
+++ b/src/drivers/rc/crsf_rc/CrsfRc.cpp
@@ -37,6 +37,7 @@
 
 #include <poll.h>
 #include <termios.h>
+#include <fcntl.h>
 
 #include <uORB/topics/battery_status.h>
 #include <uORB/topics/vehicle_attitude.h>