diff --git a/doc/Makefile.am b/doc/Makefile.am
index cb38c89..b7ca630 100644
--- a/doc/Makefile.am
+++ b/doc/Makefile.am
@@ -32,4 +32,4 @@ install-data-local:
 	$(mkinstalldirs) $(DESTDIR)$(sysconfdir)
 	$(INSTALL_DATA) siproxd.conf.example	$(DESTDIR)$(sysconfdir)/
 	$(INSTALL_DATA) siproxd_passwd.cfg	$(DESTDIR)$(sysconfdir)/
-        chmod 600 siproxd_passwd.cfg
+	chmod 600 siproxd_passwd.cfg