diff --git a/handlers/metrics.py b/handlers/metrics.py
index 9bbc170..b5beb89 100644
--- a/handlers/metrics.py
+++ b/handlers/metrics.py
@@ -16,6 +16,7 @@ class user_info_struct:
 def metric_wrap(chatID:int, userName: str, length: int, attemptsCount: int):
     """Pass here chat ID, username, pipisa length and attempts count to wrap them into metric."""
 
+    global METRICS_INITIALIZED
     if not METRICS_INITIALIZED:
         pipisa_length_metric = Gauge('user_length_total', 'Pipisa length', labelnames=['ChatID', 'Username'])
         user_attempt_metric = Gauge('user_attempts_total', 'Attempts count', labelnames=['ChatID', 'Username'])