diff --git a/docs/user-guide/ui.md b/docs/user-guide/ui.md
index 818573e0da..da2b2e611c 100644
--- a/docs/user-guide/ui.md
+++ b/docs/user-guide/ui.md
@@ -66,7 +66,7 @@ The deploy wizard expects that you provide the following information:
 
 - **App name** (mandatory): Name for your application. A [label](/docs/user-guide/labels/) with the name will be added to the Deployment and Service, if any, that will be deployed.
 
-  The application name must be unique within the selected Kubernetes [namespace](/docs/admin/namespaces/). It must start and end with a lowercase character, and contain only lowercase letters, numbers and dashes (-). It is limited to 24 characters. Leading and trailing spaces are ignored.
+  The application name must be unique within the selected Kubernetes [namespace](/docs/admin/namespaces/). It must start with a lowercase character, and end with a lowercase character or a number, and contain only lowercase letters, numbers and dashes (-). It is limited to 24 characters. Leading and trailing spaces are ignored.
 
 - **Container image** (mandatory): The URL of a public Docker [container image](/docs/user-guide/images/) on any registry, or a private image (commonly hosted on the Google Container Registry or Docker Hub). The container image specification must end with a colon.