diff --git a/src/Selenium2Driver.php b/src/Selenium2Driver.php
index 0795103d..987b5f54 100755
--- a/src/Selenium2Driver.php
+++ b/src/Selenium2Driver.php
@@ -453,11 +453,11 @@ public function back()
 
     public function switchToWindow(?string $name = null)
     {
-        $name = $name === null
+        $handle = $name === null
             ? $this->initialWindowHandle
             : $this->getWindowHandleFromName($name);
 
-        $this->getWebDriverSession()->focusWindow($name);
+        $this->getWebDriverSession()->focusWindow($handle);
     }
 
     /**