diff --git a/phpseclib/File/ASN1.php b/phpseclib/File/ASN1.php
index 5567e8eb..e21589c5 100644
--- a/phpseclib/File/ASN1.php
+++ b/phpseclib/File/ASN1.php
@@ -132,16 +132,6 @@ abstract class ASN1
      */
     private static $encoded;
 
-    /**
-     * Current Location of most recent ASN.1 encode process
-     *
-     * Useful for debug purposes
-     *
-     * @var array
-     * @see self::encode_der()
-     */
-    var $location;
-
     /**
      * Type mapping table for the ANY type.
      *