diff --git a/system/libraries/Encryption.php b/system/libraries/Encryption.php
index 171a28b..fad4ea7 100644
--- a/system/libraries/Encryption.php
+++ b/system/libraries/Encryption.php
@@ -248,7 +248,7 @@
 			$params['mode'] = strtolower($params['mode']);
 			if ( ! isset($this->_modes['mcrypt'][$params['mode']]))
 			{
-				log_message('error', 'Encryption: MCrypt mode '.strtotupper($params['mode']).' is not available.');
+				log_message('error', 'Encryption: MCrypt mode '.strtoupper($params['mode']).' is not available.');
 			}
 			else
 			{
@@ -299,7 +299,7 @@
 			$params['mode'] = strtolower($params['mode']);
 			if ( ! isset($this->_modes['openssl'][$params['mode']]))
 			{
-				log_message('error', 'Encryption: OpenSSL mode '.strtotupper($params['mode']).' is not available.');
+				log_message('error', 'Encryption: OpenSSL mode '.strtoupper($params['mode']).' is not available.');
 			}
 			else
 			{