typo
diff --git a/builds/toplevel.mk b/builds/toplevel.mk
index 6c39e0c..c22defd 100644
--- a/builds/toplevel.mk
+++ b/builds/toplevel.mk
@@ -221,8 +221,8 @@ CONFIG_SUB = ../../../config/config.sub
do-dist: distclean refdoc
@# Without removing the files, `autoconf' and friends follow links.
rm -f builds/unix/aclocal.m4
- rm -r builds/unix/configure.ac
- rm -r builds/unix/configure
+ rm -f builds/unix/configure.ac
+ rm -f builds/unix/configure
sh autogen.sh
rm -rf builds/unix/autom4te.cache