diff --git a/endpoints/trigger.py b/endpoints/trigger.py
index 240764908..081ade04c 100644
--- a/endpoints/trigger.py
+++ b/endpoints/trigger.py
@@ -621,6 +621,7 @@ class CustomBuildTrigger(BuildTrigger):
     return dockerfile_id, tags, build_name, trigger.config['subdir'], metadata
 
   def activate(self, trigger_uuid, standard_webhook_url, auth_token, config):
+    config['webhook_url'] = standard_webhook_url
     config['public_key'], private_key = generate_ssh_keypair()
     return config, private_key
 
diff --git a/static/directives/setup-trigger-dialog.html b/static/directives/setup-trigger-dialog.html
index b3eb281b6..d51a9b10a 100644
--- a/static/directives/setup-trigger-dialog.html
+++ b/static/directives/setup-trigger-dialog.html
@@ -41,11 +41,9 @@
             <div class="alert alert-warning" ng-if="pullInfo.analysis.status == 'warning'">
               {{ pullInfo.analysis.message }}
             </div>
-            <div class="alert alert-info" ng-if="pullInfo.analysis.status == 'notimplemented'">
-              <p>
-                For {{ TriggerService.getTitle(trigger.service) }} triggers, we are unable to determine dependencies automatically.
-                If the git repository being built depends on a private base image, you must manually select a robot account with the proper permissions.
-              </p>
+            <div class="alert alert-warning" ng-if="pullInfo.analysis.status == 'notimplemented'">
+              <p>For {{ TriggerService.getTitle(trigger.service) }} triggers, we are unable to determine dependencies automatically.</p>
+              <p>If the git repository being built depends on a private base image, you must manually select a robot account with the proper permissions.</p>
             </div>
             <div class="dockerfile-found" ng-if="pullInfo.analysis.is_public === false">
               <div class="dockerfile-found-content">
@@ -117,11 +115,21 @@
           <div class="trigger-option-section" ng-show="currentView == 'postActivation'" ng-switch on="trigger.service">
             <div ng-switch-when="custom">
               <div class="alert alert-warning">
-                The trigger has been successfully created, but the following first requires action:<br>
-                In order for our builders to clone your repository, you must give the following public key read access to the git repository.
+                The trigger has been successfully created, but the following first requires action:
+                <ul>
+                  <li>You must give the following public key read access to the git repository.</li>
+                  <li>You must POST to the following URL as your webhook endpoint.</li>
+                </ul>
+                For more information, refer to the <a href="http://docs.quay.io/guides/custom-trigger.html" target="_blank">Custom Git Triggers documentation</a>.
               </div>
-              <p>SSH Public Key:</p>
-             <div class="copy-box" value="trigger.config.public_key"></div>
+              <p>
+                SSH Public Key:
+                <div class="copy-box" value="trigger.config.public_key"></div>
+              </p>
+              <p>
+                Webhook Endpoint URL:
+                <div class="copy-box" value="trigger.config.webhook_url"></div>
+              </p>
             </div>
             <div ng-switch-default>
               <div class="alert alert-success">The trigger has been successfully created.</div>