diff --git a/src/os/unix/ngx_posix_config.h b/src/os/unix/ngx_posix_config.h
index 5d1358e24..2a8c413e0 100644
--- a/src/os/unix/ngx_posix_config.h
+++ b/src/os/unix/ngx_posix_config.h
@@ -145,26 +145,6 @@ typedef struct aiocb  ngx_aiocb_t;
 #define ngx_debug_init()
 
 
-#if (__FreeBSD__) && (__FreeBSD_version < 400017)
-
-#include <sys/param.h>          /* ALIGN() */
-
-/*
- * FreeBSD 3.x has no CMSG_SPACE() and CMSG_LEN() and has the broken CMSG_DATA()
- */
-
-#undef  CMSG_SPACE
-#define CMSG_SPACE(l)       (ALIGN(sizeof(struct cmsghdr)) + ALIGN(l))
-
-#undef  CMSG_LEN
-#define CMSG_LEN(l)         (ALIGN(sizeof(struct cmsghdr)) + (l))
-
-#undef  CMSG_DATA
-#define CMSG_DATA(cmsg)     ((u_char *)(cmsg) + ALIGN(sizeof(struct cmsghdr)))
-
-#endif
-
-
 extern char **environ;