diff --git a/lib/workers/global/config/parse/file.ts b/lib/workers/global/config/parse/file.ts
index bdc39481f16708..cf6ecf20c69898 100644
--- a/lib/workers/global/config/parse/file.ts
+++ b/lib/workers/global/config/parse/file.ts
@@ -70,6 +70,7 @@ export async function getConfig(env: NodeJS.ProcessEnv): Promise<AllConfig> {
       logger.fatal(err.message);
       process.exit(1);
     } else if (env.RENOVATE_CONFIG_FILE) {
+      logger.debug({ err }, 'Parse error');
       logger.fatal('Error parsing config file');
       process.exit(1);
     }