diff --git a/ChangeLog b/ChangeLog
index 095330851a..ac308d8e64 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,8 @@
+Tue Mar  8 13:39:25 2005  NAKAMURA Usaku  <usa@ruby-lang.org>
+
+	* ext/socket/mkconstants.rb: workaround for some of 4.4BSD-Lite
+	  derived OSs.
+
 Tue Mar  8 10:48:53 2005  NAKAMURA Usaku  <usa@ruby-lang.org>
 
 	* eval.c (rb_exec_recursive): declaration should precede statements
diff --git a/ext/socket/mkconstants.rb b/ext/socket/mkconstants.rb
index 42f36ece69..5212739876 100644
--- a/ext/socket/mkconstants.rb
+++ b/ext/socket/mkconstants.rb
@@ -1,5 +1,8 @@
 $out ||= $stdout
 
+# workaround for NetBSD, OpenBSD and etc.
+$out.puts("#define pseudo_AF_FTIP pseudo_AF_RTIP")
+
 # skip empty lines and comment lines
 DATA.each_line do |s|
   name, value = s.scan(/\S+/)