diff --git a/x-pack/plugins/actions/server/builtin_action_types/webhook.ts b/x-pack/plugins/actions/server/builtin_action_types/webhook.ts
index e37e53652333c..5532364fba36b 100644
--- a/x-pack/plugins/actions/server/builtin_action_types/webhook.ts
+++ b/x-pack/plugins/actions/server/builtin_action_types/webhook.ts
@@ -95,7 +95,7 @@ function validateActionTypeConfig(
   }
 
   try {
-    configurationUtilities.ensureWhitelistedUri(configObject.url);
+    configurationUtilities.ensureWhitelistedUri(url.hostname);
   } catch (whitelistError) {
     return i18n.translate('xpack.actions.builtin.webhook.webhookConfigurationError', {
       defaultMessage: 'error configuring webhook action: {message}',