diff --git a/src/Debug.php b/src/Debug.php
index aef01dc..a745e99 100644
--- a/src/Debug.php
+++ b/src/Debug.php
@@ -39,7 +39,7 @@ public static function getSapi()
     }
 
     /**
-     * Set the debug ouput environment.
+     * Set the debug output environment.
      * Setting a value of null causes Zend_Debug to use PHP_SAPI.
      *
      * @param string $sapi