diff --git a/comms/ebusd/files/patch-src_lib_ebus_datatype.cpp b/comms/ebusd/files/patch-src_lib_ebus_datatype.cpp
new file mode 100644
index 000000000000..d64b593b3f9a
--- /dev/null
+++ b/comms/ebusd/files/patch-src_lib_ebus_datatype.cpp
@@ -0,0 +1,10 @@
+--- src/lib/ebus/datatype.cpp.orig	2023-07-08 13:54:20 UTC
++++ src/lib/ebus/datatype.cpp
+@@ -22,6 +22,7 @@
+ 
+ #include "lib/ebus/datatype.h"
+ #include <math.h>
++#include <cmath> # for FreeBSD 12.4
+ #include <iostream>
+ #include <sstream>
+ #include <iomanip>