diff --git a/arch/arm/src/cxd56xx/cxd56_gnss.c b/arch/arm/src/cxd56xx/cxd56_gnss.c
index 68aebfd49ef..eea3027bf0b 100644
--- a/arch/arm/src/cxd56xx/cxd56_gnss.c
+++ b/arch/arm/src/cxd56xx/cxd56_gnss.c
@@ -28,6 +28,7 @@
 #include <stdlib.h>
 #include <string.h>
 #include <fixedmath.h>
+#include <fcntl.h>
 #include <poll.h>
 #include <errno.h>
 #include <debug.h>