diff --git a/core/server/api/v3/utils/validators/input/webhooks.js b/core/server/api/v3/utils/validators/input/webhooks.js
index 9d24793cfd..c26a895a14 100644
--- a/core/server/api/v3/utils/validators/input/webhooks.js
+++ b/core/server/api/v3/utils/validators/input/webhooks.js
@@ -1,16 +1,21 @@
 const _ = require('lodash');
 const errors = require('@tryghost/errors');
-const i18n = require('../../../../../../shared/i18n');
+const tpl = require('@tryghost/tpl');
 const jsonSchema = require('../utils/json-schema');
 
+const messages = {
+    schemaValidationFailed: 'Validation failed for \'{key}\'.',
+    noIntegrationIdProvidedContext: 'You may only create webhooks with \'integration_id\' when using session authentication.'
+};
+
 module.exports = {
     add(apiConfig, frame) {
         if (!_.get(frame, 'options.context.integration.id') && !_.get(frame.data, 'webhooks[0].integration_id')) {
             return Promise.reject(new errors.ValidationError({
-                message: i18n.t('notices.data.validation.index.schemaValidationFailed', {
+                message: tpl(messages.schemaValidationFailed, {
                     key: 'integration_id'
                 }),
-                context: i18n.t('errors.api.webhooks.noIntegrationIdProvided.context'),
+                context: tpl(messages.noIntegrationIdProvidedContext),
                 property: 'integration_id'
             }));
         }