diff --git a/mozilla/nsprpub/pr/src/misc/prnetdb.c b/mozilla/nsprpub/pr/src/misc/prnetdb.c
index e5a76a28f45..1aa991df271 100644
--- a/mozilla/nsprpub/pr/src/misc/prnetdb.c
+++ b/mozilla/nsprpub/pr/src/misc/prnetdb.c
@@ -108,6 +108,11 @@ PRLock *_pr_dnsLock = NULL;
 #define _PR_HAVE_GETPROTO_R_INT
 #endif
 
+#if __FreeBSD_version >= 602000
+#define _PR_HAVE_GETPROTO_R
+#define _PR_HAVE_5_ARG_GETPROTO_R
+#endif
+
 /* BeOS has glibc but not the glibc-style getprotobyxxx_r functions. */
 #if (defined(__GLIBC__) && __GLIBC__ >= 2 && !defined(XP_BEOS))
 #define _PR_HAVE_GETPROTO_R