diff --git a/src/Symfony/Component/Translation/Translator.php b/src/Symfony/Component/Translation/Translator.php
index 864db835c7..7fcb77853d 100644
--- a/src/Symfony/Component/Translation/Translator.php
+++ b/src/Symfony/Component/Translation/Translator.php
@@ -226,7 +226,7 @@ class Translator implements LegacyTranslatorInterface, TranslatorInterface, Tran
      */
     public function transChoice($id, $number, array $parameters = array(), $domain = null, $locale = null)
     {
-        @trigger_error(sprintf('The "%s()" method is deprecated since Symfony 4.2, use the trans() one instead with a "%count%" parameter.', __METHOD__), E_USER_DEPRECATED);
+        @trigger_error(sprintf('The "%s()" method is deprecated since Symfony 4.2, use the trans() one instead with a "%%count%%" parameter.', __METHOD__), E_USER_DEPRECATED);
 
         if (!$this->formatter instanceof ChoiceMessageFormatterInterface) {
             throw new LogicException(sprintf('The formatter "%s" does not support plural translations.', \get_class($this->formatter)));