diff --git a/include/compiler.h b/include/compiler.h
index 91dbe56..4e047c7 100644
--- a/include/compiler.h
+++ b/include/compiler.h
@@ -44,7 +44,7 @@
 #ifdef __linux__
 # include <endian.h>
 # include <byteswap.h>
-#elif defined(__MACH__)
+#elif defined(__MACH__) || defined(__FreeBSD__)
 # include <machine/endian.h>
 typedef unsigned long ulong;
 #endif