diff --git a/src/Webp.php b/src/Webp.php
index 7d5382c..64f50b5 100644
--- a/src/Webp.php
+++ b/src/Webp.php
@@ -116,8 +116,12 @@ class Webp {
         $sourceImage = DeprecationHelper::backwardsCompatibleCall(
           \Drupal::VERSION,
           '10.2',
-          currentCallable: fn () => $toolkit->getImage(),
-          deprecatedCallable: fn () => $toolkit->getResource(),
+          function () use ($toolkit) {
+            return $toolkit->getImage();
+          },
+          function () use ($toolkit) {
+            return $toolkit->getResource();
+          }
         );
       }