diff --git a/apps/system/logging/values.yaml b/apps/system/logging/values.yaml
index d242a32..a63c345 100644
--- a/apps/system/logging/values.yaml
+++ b/apps/system/logging/values.yaml
@@ -29,5 +29,5 @@ graylog:
         secretName: graylog-tls
     mongodb:
       uri:
-        mongodb://mongodb:27017
+        mongodb://mongodb:27017/graylog