diff --git a/make/autoconf.mk b/make/autoconf.mk
index 7ca62830..24a3a43c 100644
--- a/make/autoconf.mk
+++ b/make/autoconf.mk
@@ -16,7 +16,7 @@ config: config.acdone $(AC_FILES)
 install: config $(AC_FILES) make_install
 make_install:
 	if [ -z "$(CONFIG_ACDONE)" ]; then make $@; fi
-distclean: confclean
+distclean: confclean acclean
 confclean:
 	rm -rf $(DISTCLEAN) $(CLEAN) $(AC_FILES) autom4te.cache