diff --git a/app/code/Magento/PageCache/Controller/Block.php b/app/code/Magento/PageCache/Controller/Block.php
index 01d09ba112587..8bbef4f74e19e 100644
--- a/app/code/Magento/PageCache/Controller/Block.php
+++ b/app/code/Magento/PageCache/Controller/Block.php
@@ -92,7 +92,8 @@ public function __construct(
             ?: ObjectManager::getInstance()->get(LayoutCacheKeyInterface::class);
         $this->regexValidatorFactory = $regexValidatorFactory
             ?: ObjectManager::getInstance()->get(RegexFactory::class);
-        $this->config = $scopeConfig;
+        $this->config = $scopeConfig
+            ?: ObjectManager::getInstance()->get(ScopeConfigInterface::class);
     }
 
     /**