diff --git a/app.py b/app.py
index f70ec9e..fa97632 100644
--- a/app.py
+++ b/app.py
@@ -467,7 +467,7 @@ def invite(room_id, event_id):
         remember_user(sender)
 
         with METRICS_LOCK:
-        METRICS["invite_allowed"] += 1
+            METRICS["invite_allowed"] += 1
 
         return forward_request(
             "PUT",