diff --git a/server.js b/server.js
index 835c57a..9dbb1f0 100644
--- a/server.js
+++ b/server.js
@@ -105,6 +105,7 @@ function handleLogin(req, res) {
     }
     let ok = false;
     try { ok = store.verifyPassword(String(b.password || ""), user.salt, user.passwordHash); } catch (e) {}
+    console.error("LOGIN_FAIL", b.login, String(user && user.id), "ok=" + ok);
     if (!ok) {
       user.failedCount = (user.failedCount || 0) + 1;
       if (user.failedCount >= 5) {