diff --git a/doc/Makefile.am b/doc/Makefile.am
index a574765e..035c74c6 100644
--- a/doc/Makefile.am
+++ b/doc/Makefile.am
@@ -20,7 +20,7 @@ ocpasswd.8: ../src/ocpasswd-args.def
 	rm -f "$<".tmp
 
 install-data-local:
-	test -d "$(DBUS_SERVICES_DIR)" && $(INSTALL_DATA) dbus/org.infradead.ocserv.service $(DBUS_SERVICES_DIR)
-	test -d "$(DBUS_CONFIG_DIR)" && $(INSTALL_DATA) dbus/org.infradead.ocserv.conf $(DBUS_CONFIG_DIR)
-	test -d "/usr/lib/systemd/system/" && $(INSTALL_DATA) systemd/ocserv.service /usr/lib/systemd/system/
-	test -d "/usr/lib/systemd/system/" && $(INSTALL_DATA) systemd/ocserv.socket /usr/lib/systemd/system/
+	-test -d "$(DBUS_SERVICES_DIR)" && $(INSTALL_DATA) dbus/org.infradead.ocserv.service $(DBUS_SERVICES_DIR)
+	-test -d "$(DBUS_CONFIG_DIR)" && $(INSTALL_DATA) dbus/org.infradead.ocserv.conf $(DBUS_CONFIG_DIR)
+	-test -d "/usr/lib/systemd/system/" && $(INSTALL_DATA) systemd/ocserv.service /usr/lib/systemd/system/
+	-test -d "/usr/lib/systemd/system/" && $(INSTALL_DATA) systemd/ocserv.socket /usr/lib/systemd/system/