diff --git a/system/expressionengine/third_party/easy_jail/pi.easy_jail.php b/system/expressionengine/third_party/easy_jail/pi.easy_jail.php
index 944bec6..f92e670 100644
--- a/system/expressionengine/third_party/easy_jail/pi.easy_jail.php
+++ b/system/expressionengine/third_party/easy_jail/pi.easy_jail.php
@@ -113,7 +113,13 @@ function prep( $str='', $xhtml='', $class_name='', $blank_img='' )
 						if ( $name == 'src' )
 						{
 							$src = $value;
-						} else {
+						}
+						elseif ( $name == 'class' )
+						{
+							$class_name .= " {$value}";
+						}
+						else
+						{
 							$attributes[$name] = $name . '="' . $value . '"';
 						}
 					}