diff --git a/config.sub b/config.sub
index bc37d15..f208366 100755
--- a/config.sub
+++ b/config.sub
@@ -566,7 +566,7 @@ case $os in
 	      | -riscos* | -linux* | -uniplus* | -iris* | -rtu* | -xenix* \
 	      | -hiux* | -386bsd* | -netbsd* | -freebsd* | -riscix* \
 	      | -lynxos* | -bosx* | -nextstep* | -cxux* | -aout* | -elf* \
-	      | -ptx*)
+	      | -ptx* | -coff*)
 		;;
 	-sunos5*)
 		os=`echo $os | sed -e 's|sunos5|solaris2|'`