symfony
diff --git a/‎src/Symfony/Component/Notifier/Message/EmailMessage.php
Copy file name to clipboardExpand all lines: src/Symfony/Component/Notifier/Message/EmailMessage.php
+4-1Lines changed: 4 additions & 1 deletion b/‎src/Symfony/Component/Notifier/Message/EmailMessage.php
Copy file name to clipboardExpand all lines: src/Symfony/Component/Notifier/Message/EmailMessage.php
+4-1Lines changed: 4 additions & 1 deletion
diff --git a/‎src/Symfony/Component/Notifier/Message/SmsMessage.php
Copy file name to clipboardExpand all lines: src/Symfony/Component/Notifier/Message/SmsMessage.php
+1-1Lines changed: 1 addition & 1 deletion b/‎src/Symfony/Component/Notifier/Message/SmsMessage.php
Copy file name to clipboardExpand all lines: src/Symfony/Component/Notifier/Message/SmsMessage.php
+1-1Lines changed: 1 addition & 1 deletion
@@ -97,11 +97,14 @@ public function getOptions(): ?MessageOptionsInterface
     /**
      * @return $this
      */
-    public function transport(string $transport): self
+    public function transport(?string $transport): self
     {
         if (!$this->message instanceof Email) {
             throw new LogicException('Cannot set a Transport on a RawMessage instance.');
         }
+        if (null === $transport) {
+            return $this;
+        }
 
         $this->message->getHeaders()->addTextHeader('X-Transport', $transport);
 
 
@@ -81,7 +81,7 @@ public function getSubject(): string
     /**
      * @return $this
      */
-    public function transport(string $transport): self
+    public function transport(?string $transport): self
     {
         $this->transport = $transport;
Original file line number	Diff line number	Diff line change
`@@ -81,7 +81,7 @@ public function getSubject(): string`
`81`	`81`	`/**`
`82`	`82`	`* @return $this`
`83`	`83`	`*/`
`84`		`- public function transport(string $transport): self`
	`84`	`+ public function transport(?string $transport): self`
`85`	`85`	`{`
`86`	`86`	`$this->transport = $transport;`
`87`	`87`