diff --git a/src/Environment.php b/src/Environment.php
index 82b01d9d3..0cd5ef235 100644
--- a/src/Environment.php
+++ b/src/Environment.php
@@ -522,7 +522,7 @@ class Environment
      * @throws LoaderError When the template cannot be found
      * @throws SyntaxError When an error occurred during compilation
      */
-    public function createTemplate($template, string $name = null)
+    public function createTemplate($template, $name = null)
     {
         $hash = hash('sha256', $template, false);
         if (null !== $name) {
diff --git a/src/Extension/StringLoaderExtension.php b/src/Extension/StringLoaderExtension.php
index 3c7400b70..295d5911c 100644
--- a/src/Extension/StringLoaderExtension.php
+++ b/src/Extension/StringLoaderExtension.php
@@ -47,7 +47,7 @@ use Twig\Template;
  *
  * @return Template
  */
-function twig_template_from_string(Environment $env, $template, string $name = null)
+function twig_template_from_string(Environment $env, $template, $name = null)
 {
     return $env->createTemplate((string) $template, $name);
 }