diff --git a/wp-pdf-helper.php b/wp-pdf-helper.php
index 1b2bacb..335879c 100644
--- a/wp-pdf-helper.php
+++ b/wp-pdf-helper.php
@@ -94,7 +94,7 @@ function filter_shortcode_parameters($parameters) {
         $parameters['mheight'] = '200px';
         $parameters['gheight'] = '150px';
     } else if (  $gpxmap_size === 'large') {
-        $parameters['mheight'] = '550px';
+        $parameters['mheight'] = '600px';
         $parameters['gheight'] = '300px';
     }
     $parameters['attachments'] = 'false';