diff --git a/src/Symfony/Bridge/PhpUnit/DeprecationErrorHandler/Configuration.php b/src/Symfony/Bridge/PhpUnit/DeprecationErrorHandler/Configuration.php
index 44f0341205..6b42814bbc 100644
--- a/src/Symfony/Bridge/PhpUnit/DeprecationErrorHandler/Configuration.php
+++ b/src/Symfony/Bridge/PhpUnit/DeprecationErrorHandler/Configuration.php
@@ -90,9 +90,12 @@ class Configuration
      */
     public function tolerates(array $deprecations)
     {
-        $deprecationCounts = array_filter($deprecations, function ($key) {
-            return false !== strpos($key, 'Count') && false === strpos($key, 'legacy');
-        }, ARRAY_FILTER_USE_KEY);
+        $deprecationCounts = [];
+        foreach ($deprecations as $key => $deprecation) {
+            if (false !== strpos($key, 'Count') && false === strpos($key, 'legacy')) {
+                $deprecationCounts[$key] = $deprecation;
+            }
+        }
 
         if (array_sum($deprecationCounts) > $this->thresholds['total']) {
             return false;