diff --git a/phpseclib/Crypt/RC4.php b/phpseclib/Crypt/RC4.php
index 3a8015c1..90ca3ea5 100644
--- a/phpseclib/Crypt/RC4.php
+++ b/phpseclib/Crypt/RC4.php
@@ -162,6 +162,15 @@ class Crypt_RC4 {
      */
     var $mode;
 
+    /**
+     * Continuous Buffer status
+     *
+     * @see Crypt_RC4::enableContinuousBuffer()
+     * @var Boolean
+     * @access private
+     */
+    var $continuousBuffer = false;
+
     /**
      * Default Constructor.
      *