diff --git a/newlib/libc/sys/rtems/include/sys/mman.h b/newlib/libc/sys/rtems/include/sys/mman.h
index 89cc4d699..c68efcc15 100644
--- a/newlib/libc/sys/rtems/include/sys/mman.h
+++ b/newlib/libc/sys/rtems/include/sys/mman.h
@@ -193,8 +193,8 @@
 /*
  * Flags for memfd_create().
  */
-#define	MFD_ALLOW_SEALING		0x00000001
-#define	MFD_CLOEXEC			0x00000002
+#define	MFD_CLOEXEC			0x00000001
+#define	MFD_ALLOW_SEALING		0x00000002
 
 /* UNSUPPORTED */
 #define	MFD_HUGETLB			0x00000004