diff --git a/mailpoet/assets/js/src/global.d.ts b/mailpoet/assets/js/src/global.d.ts
index 27c2925e76..4999822808 100644
--- a/mailpoet/assets/js/src/global.d.ts
+++ b/mailpoet/assets/js/src/global.d.ts
@@ -154,6 +154,7 @@ interface Window {
   grecaptcha?: any;
   MailPoetForm?: {
     ajax_url: string;
+    ajax_common_error_message: string;
   };
   mailpoet_authorized_emails?: string[];
   mailpoet_verified_sender_domains?: string[];
diff --git a/mailpoet/assets/js/src/public.tsx b/mailpoet/assets/js/src/public.tsx
index 8e4b3505a7..c5ecfc0174 100644
--- a/mailpoet/assets/js/src/public.tsx
+++ b/mailpoet/assets/js/src/public.tsx
@@ -9,6 +9,13 @@ const exitIntentEvent = 'mouseleave.mailpoet.form-exit-intent';
 const startingClassName = 'starting-to-show';
 
 jQuery(($) => {
+  // Initialize Ajax Error message
+  MailPoet.I18n.add(
+    'ajaxFailedErrorMessage',
+    window.MailPoetForm.ajax_common_error_message,
+  );
+
+  // Initialize Parsley validation
   Parsley.addValidator('names', {
     requirementType: ['string', 'string'],
     validateString: (value, errorBrackets, errorURL) => {
diff --git a/mailpoet/lib/Form/AssetsController.php b/mailpoet/lib/Form/AssetsController.php
index 2833b5fe58..3f7da0ec53 100644
--- a/mailpoet/lib/Form/AssetsController.php
+++ b/mailpoet/lib/Form/AssetsController.php
@@ -86,28 +86,12 @@ class AssetsController {
       true
     );
 
+    $ajaxFailedErrorMessage = __('An error has happened while performing a request, please try again later.', 'mailpoet');
     $this->wp->wpLocalizeScript('mailpoet_public', 'MailPoetForm', [
       'ajax_url' => $this->wp->adminUrl('admin-ajax.php'),
       'is_rtl' => (function_exists('is_rtl') ? (bool)is_rtl() : false),
+      'ajax_common_error_message' => esc_js($ajaxFailedErrorMessage),
     ]);
-
-    $ajaxFailedErrorMessage = __('An error has happened while performing a request, please try again later.', 'mailpoet');
-
-    $inlineScript = <<<EOL
-function initMailpoetTranslation() {
-  if (typeof MailPoet !== 'undefined') {
-    MailPoet.I18n.add('ajaxFailedErrorMessage', '%s')
-  } else {
-    setTimeout(initMailpoetTranslation, 250);
-  }
-}
-setTimeout(initMailpoetTranslation, 250);
-EOL;
-    $this->wp->wpAddInlineScript(
-      'mailpoet_public',
-      sprintf($inlineScript, esc_js($ajaxFailedErrorMessage)),
-      'after'
-    );
   }
 
   public function setupAdminWidgetPageDependencies() {