diff --git a/include/sys/prctl.h b/include/sys/prctl.h
index 9af5b8ae..4129a70c 100644
--- a/include/sys/prctl.h
+++ b/include/sys/prctl.h
@@ -116,6 +116,9 @@ struct prctl_mm_map {
 #define PR_SET_THP_DISABLE      41
 #define PR_GET_THP_DISABLE      42
 
+#define PR_MPX_ENABLE_MANAGEMENT  43
+#define PR_MPX_DISABLE_MANAGEMENT 44
+
 int prctl (int, ...);
 
 #ifdef __cplusplus