diff --git a/ingestor/metrics.py b/ingestor/metrics.py
index a9ee17f..9b7e50b 100644
--- a/ingestor/metrics.py
+++ b/ingestor/metrics.py
@@ -93,7 +93,7 @@ OPC_MANAGERS_ACTIVE = Gauge(
 )
 OPC_SUBSCRIPTION_ERRORS = Counter(
     'ingestor_opc_subscription_errors_total',
-    'Errors when trying to subscribe to OPC tags',
+    'Errors when trying to subscribe to or unsubscribe from OPC tags',
     ['pod_id', 'server', 'slot'],
 )