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 02761f4e42..f0f22274b0 100644
--- a/roles/copr/backend/files/provision/files/mock/site-defaults.cfg
+++ b/roles/copr/backend/files/provision/files/mock/site-defaults.cfg
@@ -15,4 +15,5 @@ config_opts['plugin_conf']['root_cache_opts']['age_check'] = False
 config_opts['plugin_conf']['bind_mount_enable'] = False
 
 config_opts['plugin_conf']['compress_logs_enable'] = True
+config_opts['plugin_conf']['compress_logs_opts'] = {}
 config_opts['plugin_conf']['compress_logs_opts']['command'] = "/usr/bin/gzip -9 --force"