diff --git a/src/basic/missing_mman.h b/src/basic/missing_mman.h
index 4a109128d0..f48c436dca 100644
--- a/src/basic/missing_mman.h
+++ b/src/basic/missing_mman.h
@@ -10,3 +10,11 @@
 #ifndef MFD_CLOEXEC
 #define MFD_CLOEXEC 0x0001U
 #endif
+
+#ifndef MFD_NOEXEC_SEAL
+#define MFD_NOEXEC_SEAL 0x0008U
+#endif
+
+#ifndef MFD_EXEC
+#define MFD_EXEC 0x0010U
+#endif