diff --git a/mod_auth_openidc.spec b/mod_auth_openidc.spec
index a8fc903..384a2c8 100644
--- a/mod_auth_openidc.spec
+++ b/mod_auth_openidc.spec
@@ -1,4 +1,4 @@
-%{!?_httpd_mmn: %{expand: %%global _httpd_mmn %%(cat %{_includedir}/httpd/.mmn || echo 0-0)}}
+%{!?_httpd_mmn: %{expand: %%global _httpd_mmn %%(cat %{_includedir}/httpd/.mmn 2>/dev/null || echo 0-0)}}
 %{!?_httpd_moddir: %{expand: %%global _httpd_moddir %%{_libdir}/httpd/modules}}
 %{!?_httpd_confdir: %{expand: %%global _httpd_confdir %{_sysconfdir}/httpd/conf.d}}