diff --git a/roles/copr/backend/files/provision/files/mock/site-defaults.cfg b/roles/copr/backend/files/provision/files/mock/site-defaults.cfg
index 65b02da63e..477293365b 100644
--- a/roles/copr/backend/files/provision/files/mock/site-defaults.cfg
+++ b/roles/copr/backend/files/provision/files/mock/site-defaults.cfg
@@ -6,7 +6,8 @@ config_opts['plugin_conf']['ccache_enable'] = False
 config_opts['plugin_conf']['yum_cache_enable'] = False
 
 config_opts['plugin_conf']['root_cache_enable'] = True
-config_opts['plugin_conf']['root_cache_opts']['age_check'] = False
+# when used build ignores additional buildroot packages, reason unknown
+# config_opts['plugin_conf']['root_cache_opts']['age_check'] = False
 config_opts['plugin_conf']['root_cache_opts']['exclude_dirs'] = ["./proc", "./sys", "./dev",
                                                                   "./tmp/ccache", "./var/cache/yum" ]
 config_opts['plugin_conf']['bind_mount_enable'] = False