diff --git a/src/Symfony/Component/HttpKernel/HttpCache/Store.php b/src/Symfony/Component/HttpKernel/HttpCache/Store.php
index 7dfdc491dda8..eeb7a6ef948b 100644
--- a/src/Symfony/Component/HttpKernel/HttpCache/Store.php
+++ b/src/Symfony/Component/HttpKernel/HttpCache/Store.php
@@ -298,7 +298,7 @@ private function getMetadata(string $key): array
             return [];
         }
 
-        return unserialize($entries);
+        return unserialize($entries) ?: [];
     }
 
     /**