diff --git a/user_guide/libraries/encryption.html b/user_guide/libraries/encryption.html
index 6f020a6..7c6f909 100644
--- a/user_guide/libraries/encryption.html
+++ b/user_guide/libraries/encryption.html
@@ -141,7 +141,7 @@
 <h2>$this->encrypt->set_cipher();</h2>
 
 <p>Permits you to set an Mcrypt cipher.  By default it uses <samp>MCRYPT_RIJNDAEL_256</samp>.  Example:
-<code>$this->encrypt->set_cipher('MCRYPT_BLOWFISH');</code>
+<code>$this->encrypt->set_cipher(MCRYPT_BLOWFISH);</code>
 <p>Please visit php.net for a list of  <a href="http://php.net/mcrypt">available ciphers</a>.</p>
 
 <p>If you'd like to manually test whether your server supports Mcrypt you can use:</p>
@@ -151,7 +151,7 @@
 <h2>$this->encrypt->set_mode();</h2>
 
 <p>Permits you to set an Mcrypt mode.  By default it uses <samp>MCRYPT_MODE_ECB</samp>.  Example:
-<code>$this->encrypt->set_mode('MCRYPT_MODE_CFB');</code>
+<code>$this->encrypt->set_mode(MCRYPT_MODE_CFB);</code>
 <p>Please visit php.net for a list of  <a href="http://php.net/mcrypt">available modes</a>.</p>