diff --git a/libraries/AP_Common/missing/fcntl.h b/libraries/AP_Common/missing/fcntl.h
deleted file mode 100644
index a942f06a41..0000000000
--- a/libraries/AP_Common/missing/fcntl.h
+++ /dev/null
@@ -1,9 +0,0 @@
-#include_next <fcntl.h>
-
-/*
- * we only want to define as 0 for those targets in which it doesn't make
- * sense
- */
-#if defined(HAVE_OCLOEXEC) && HAVE_OCLOEXEC == 0
-#define O_CLOEXEC 0
-#endif