diff --git a/distro/systemd/Makefile.am b/distro/systemd/Makefile.am
index 322bd535..d35c137d 100644
--- a/distro/systemd/Makefile.am
+++ b/distro/systemd/Makefile.am
@@ -21,6 +21,7 @@ if ENABLE_SYSTEMD
 systemdunit_DATA = \
 	openvpn-client@.service \
 	openvpn-server@.service
+CLEANFILES = $(systemdunit_DATA)
 tmpfiles_DATA = \
 	tmpfiles-openvpn.conf
 dist_doc_DATA = \