diff --git a/public/v4/apps/graylog.yml b/public/v4/apps/graylog.yml
index 7e4446e..f31f3c1 100644
--- a/public/v4/apps/graylog.yml
+++ b/public/v4/apps/graylog.yml
@@ -97,7 +97,13 @@ caproverOneClickApp:
              Be sure to extend the virtual memory on all your hosts! 
               1. echo 'vm.max_map_count=262144' >> /etc/sysctl.conf
               2. sysctl -p
-        end: Deployment of Graylog if finished. You will see 502 errors for the next 5+ minutes while Graylog starts up. Goto <YOUR-APP-URL> and login as "admin" with your unhashed password.
+        end: >-
+            Deployment of Graylog if finished. 
+            You will see 502 errors for the next 5+ minutes while Graylog starts up. 
+            Goto <YOUR-APP-URL> and login as "admin" with your unhashed password.
+            
+            IMPORTANT! Do not forget to map port 12201 and 12202 in your app config. Without port mapping, Graylog will not work.
+            
     displayName: ''
     isOfficial: true
     description: Graylog is used for log management of both structured and unstructured data along with debugging applications.