diff --git a/owrx/controllers/metrics.py b/owrx/controllers/metrics.py
index 2b2614c..83a3faa 100644
--- a/owrx/controllers/metrics.py
+++ b/owrx/controllers/metrics.py
@@ -1,6 +1,8 @@
 from . import Controller
 from owrx.metrics import CounterMetric, DirectMetric, Metrics
 import json
+import re
+
 
 
 class MetricsController(Controller):