diff --git a/science/mmdb2/files/patch-mmdb2_mmdb__machine__.h b/science/mmdb2/files/patch-mmdb2_mmdb__machine__.h
new file mode 100644
index 000000000000..c168ba29cda1
--- /dev/null
+++ b/science/mmdb2/files/patch-mmdb2_mmdb__machine__.h
@@ -0,0 +1,10 @@
+--- mmdb2/mmdb_machine_.h.orig	2022-03-01 06:35:17 UTC
++++ mmdb2/mmdb_machine_.h
+@@ -41,6 +41,7 @@
+ #ifndef  __MMDB_Machine__
+ #define  __MMDB_Machine__
+ 
++#include <stddef.h>
+ #include "mmdb_mattype.h"
+ 
+ /*