diff --git a/CHANGES b/CHANGES
index ac8b0d6f55..c40093a1e5 100644
--- a/CHANGES
+++ b/CHANGES
@@ -1,3 +1,6 @@
+3243.	[port]		freebsd,netbsd,bsdi: the thread defaults were not
+			being properly set.
+
 3242.	[func]		Extended the header of raw-format master files to
 			include the serial number of the zone from which
 			they were generated, if different (as in the case
diff --git a/config.threads.in b/config.threads.in
index aefce01377..3dd9ea761c 100644
--- a/config.threads.in
+++ b/config.threads.in
@@ -33,8 +33,9 @@ case $host in
 *-*-sysv*OpenUNIX*)
         # UnixWare
 	use_threads=true ;;
-*-netbsd[1234].*)
-	# NetBSD earlier than NetBSD 5.0 has poor pthreads.  Don't use it by default.
+[*-netbsd[1234].*])
+	# NetBSD earlier than NetBSD 5.0 has poor pthreads.
+	#  Don't use it by default.
 	use_threads=false ;;
 *-netbsd*)
 	use_threads=true ;;
@@ -42,11 +43,14 @@ case $host in
 	# OpenBSD users have reported that named dumps core on
 	# startup when built with threads.
 	use_threads=false ;;
-*-freebsd[89].*)
-	use_threads=true ;;
-*-freebsd*)
+[*-freebsd[1234567].*])
+	# Threads are broken at least up to FreeBSD 4.11.
+	# FreeBSD 5, 6 and 7 we have never officially supported threads
+	# on. YMMV
 	use_threads=false ;;
-*-bsdi[234]*)
+*-freebsd*)
+	use_threads=true ;;
+[*-bsdi[234]*])
 	# Thread signals do not work reliably on some versions of BSD/OS.
 	use_threads=false ;;
 *-bsdi5*)