diff --git a/x-pack/plugins/triggers_actions_ui/public/application/lib/validate_params_for_warnings.test.ts b/x-pack/plugins/triggers_actions_ui/public/application/lib/validate_params_for_warnings.test.ts
index 9de5749fbc2b3..fc0469c56cf50 100644
--- a/x-pack/plugins/triggers_actions_ui/public/application/lib/validate_params_for_warnings.test.ts
+++ b/x-pack/plugins/triggers_actions_ui/public/application/lib/validate_params_for_warnings.test.ts
@@ -22,7 +22,8 @@ describe('validateParamsForWarnings', () => {
   ];
 
   test('returns warnings when publicUrl is not set and there are publicUrl variables used', () => {
-    const warning = 'server.publicBaseUrl is not set. Actions will use relative URLs.';
+    const warning =
+      'server.publicBaseUrl is not set. Generated URLs will be either relative or empty.';
     expect(
       validateParamsForWarnings('Test for {{context.url}}', undefined, actionVariables)
     ).toEqual(warning);
diff --git a/x-pack/plugins/triggers_actions_ui/public/application/lib/validate_params_for_warnings.ts b/x-pack/plugins/triggers_actions_ui/public/application/lib/validate_params_for_warnings.ts
index d361d6f739cdc..447a751f32a3c 100644
--- a/x-pack/plugins/triggers_actions_ui/public/application/lib/validate_params_for_warnings.ts
+++ b/x-pack/plugins/triggers_actions_ui/public/application/lib/validate_params_for_warnings.ts
@@ -13,7 +13,8 @@ import Mustache from 'mustache';
 const publicUrlWarning = i18n.translate(
   'xpack.triggersActionsUI.sections.actionTypeForm.warning.publicUrl',
   {
-    defaultMessage: 'server.publicBaseUrl is not set. Actions will use relative URLs.',
+    defaultMessage:
+      'server.publicBaseUrl is not set. Generated URLs will be either relative or empty.',
   }
 );