diff --git a/Action/GetHttpRequestAction.php b/Action/GetHttpRequestAction.php
index 81a3ec05..f99104d0 100644
--- a/Action/GetHttpRequestAction.php
+++ b/Action/GetHttpRequestAction.php
@@ -23,12 +23,12 @@ class GetHttpRequestAction implements ActionInterface
     /**
      * @deprecated
      */
-    public function setHttpRequest(Request $httpRequest = null): void
+    public function setHttpRequest(?Request $httpRequest = null): void
     {
         $this->httpRequest = $httpRequest;
     }
 
-    public function setHttpRequestStack(RequestStack $httpRequestStack = null): void
+    public function setHttpRequestStack(?RequestStack $httpRequestStack = null): void
     {
         $this->httpRequestStack = $httpRequestStack;
     }
diff --git a/Action/ObtainCreditCardAction.php b/Action/ObtainCreditCardAction.php
index 5b5ec3f4..bd842c64 100644
--- a/Action/ObtainCreditCardAction.php
+++ b/Action/ObtainCreditCardAction.php
@@ -54,12 +54,12 @@ public function __construct(FormFactoryInterface $formFactory, $templateName)
     /**
      * @deprecated
      */
-    public function setRequest(Request $request = null): void
+    public function setRequest(?Request $request = null): void
     {
         $this->httpRequest = $request;
     }
 
-    public function setRequestStack(RequestStack $requestStack = null): void
+    public function setRequestStack(?RequestStack $requestStack = null): void
     {
         $this->httpRequestStack = $requestStack;
     }