No need for eval to extend a class
diff --git a/system/database/DB.php b/system/database/DB.php
index 5c90f44..27142c8 100755
--- a/system/database/DB.php
+++ b/system/database/DB.php
@@ -138,14 +138,14 @@
 
 		if ( ! class_exists('CI_DB'))
 		{
-			eval('class CI_DB extends CI_DB_active_record { }');
+			class CI_DB extends CI_DB_active_record { }
 		}
 	}
 	else
 	{
 		if ( ! class_exists('CI_DB'))
 		{
-			eval('class CI_DB extends CI_DB_driver { }');
+			class CI_DB extends CI_DB_driver { }
 		}
 	}