diff --git a/lib/libbz2/Makefile b/lib/libbz2/Makefile
index a8172f292e04..3d5336fd8c0e 100644
--- a/lib/libbz2/Makefile
+++ b/lib/libbz2/Makefile
@@ -1,4 +1,4 @@
-#	$NetBSD: Makefile,v 1.9 2002/08/19 09:41:28 lukem Exp $
+#	$NetBSD: Makefile,v 1.10 2006/05/21 03:34:57 mrg Exp $
 
 NOMAN=		# defined
 
@@ -21,6 +21,12 @@ CLEANFILES+=	bzip2.texi
 COPTS+=		-O0
 .endif
 
+# XXX blocksort.c gets mis-compiled with 4.1
+.if (${MACHINE_ARCH} == "sh3el" || ${MACHINE_ARCH} == "sh3eb") && \
+    ${HAVE_GCC} == 4
+COPTS.blocksort.c+=		-O0
+.endif
+
 bzip2.texi: manual.texi
 	@-rm -f $@
 	sed -e 's/@parindent.*//' \