diff --git a/net-mgmt/net-snmp/files/patch-include_net-snmp_system_freebsd15.h b/net-mgmt/net-snmp/files/patch-include_net-snmp_system_freebsd15.h
new file mode 100644
index 000000000000..e29c2648ffef
--- /dev/null
+++ b/net-mgmt/net-snmp/files/patch-include_net-snmp_system_freebsd15.h
@@ -0,0 +1,6 @@
+--- /dev/null	2023-09-03 22:25:19.482823000 -0700
++++ include/net-snmp/system/freebsd15.h	2023-09-03 22:24:08.956666000 -0700
+@@ -0,0 +1,3 @@
++/* freebsd15 is a superset of freebsd14 */
++#include "freebsd14.h"
++#define freebsd14 freebsd14