diff --git a/library/Fiktiv/Performance.php b/library/Fiktiv/Performance.php
index b00a5d3..75d551c 100644
--- a/library/Fiktiv/Performance.php
+++ b/library/Fiktiv/Performance.php
@@ -6,14 +6,8 @@ class Fiktiv_Performance
      * @var float
      */
     protected static $_start  = null;
-    protected static $_end    = null;
     protected static $_result = null;
 
-    /**
-     * @var float
-     */
-    protected static $_end = null;
-
     /**
      * @return void
      */
@@ -27,9 +21,7 @@ class Fiktiv_Performance
      */
     public static function end()
     {
-        self::$_end = microtime(true);
-
-        self::$_result = self::$_end - self::$_start;
+        self::$_result = microtime(true) - self::$_start;
         
         return self::result();
     }