diff --git a/src/lib/libc/hash/Makefile.inc b/src/lib/libc/hash/Makefile.inc
index 699ebb0d..20528d52 100644
--- a/src/lib/libc/hash/Makefile.inc
+++ b/src/lib/libc/hash/Makefile.inc
@@ -1,4 +1,4 @@
-#	$OpenBSD: Makefile.inc,v 1.7 1999/11/17 05:22:40 millert Exp $
+#	$OpenBSD: Makefile.inc,v 1.8 2001/09/02 14:20:40 art Exp $
 
 # hash functions
 .PATH: ${LIBCSRCDIR}/hash
@@ -11,3 +11,8 @@ MLINKS+=sha1.3 SHA1Transform.3
 MLINKS+=rmd160.3 RMD160Init.3 rmd160.3 RMD160Update.3 rmd160.3 RMD160Final.3
 MLINKS+=rmd160.3 RMD160End.3  rmd160.3 RMD160File.3   rmd160.3 RMD160Data.3
 MLINKS+=rmd160.3 RMD160Transform.3
+
+.if (${MACHINE_ARCH} == "sparc64")
+sha1.o:
+	${CC} ${CFLAGS} ${CPPFLAGS} -O0 -c ${.IMPSRC}
+.endif