diff --git a/ChangeLog b/ChangeLog
index 425071002e..0fbf85f429 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,8 @@
+Mon Sep  3 14:11:17 2001  Akinori MUSHA  <knu@iDaemons.org>
+
+	* error.c: unbreak the build on *BSD with gcc 3.0.1 by removing
+	  the conflicting declaration of sys_nerr for *BSD.
+
 Sat Sep  1 09:50:54 2001  Nobuyoshi Nakada  <nobu.nakada@nifty.ne.jp>
 
 	* ruby.c (set_arg0): prevent SEGV when val is longer than the
diff --git a/error.c b/error.c
index f988f387c1..544c8c798d 100644
--- a/error.c
+++ b/error.c
@@ -506,7 +506,7 @@ static const syserr_index_entry syserr_index[]= {
 static VALUE *syserr_list;
 #endif
 
-#if !defined NT && !defined sys_nerr
+#if !defined(NT) && !defined(__FreeBSD__) && !defined(__NetBSD__) && !defined(__OpenBSD__) && !defined(sys_nerr)
 extern int sys_nerr;
 #endif