diff --git a/debian/tests/smoke-test-nginx b/debian/tests/smoke-test-nginx
index 1542530c5918eb8e7c6b67cc38d35388ecb0d7d8..9d8386a20f5afc000ebff57d944f4dd1d8793af3 100755
--- a/debian/tests/smoke-test-nginx
+++ b/debian/tests/smoke-test-nginx
@@ -18,4 +18,10 @@ sh /usr/share/doc/redmine/examples/run-redmine-fcgi &
 
 service nginx restart
 
+# debug
+systemctl status nginx.service
+tail /var/log/nginx/error.log
+ps -fe | grep cgi
+curl -v http://localhost${uri}
+
 curl -s http://localhost${uri} | grep 'meta.*name="description".*content="Redmine"'