diff --git a/includes/fullcalendar.drush.inc b/includes/fullcalendar.drush.inc
index 282d5d3..7cb89f4 100644
--- a/includes/fullcalendar.drush.inc
+++ b/includes/fullcalendar.drush.inc
@@ -56,7 +56,7 @@ function drush_fullcalendar_post_pm_enable() {
  * Commands to download the FullCalendar plugin.
  */
 function drush_fullcalendar_plugin($path = 'sites/all/libraries') {
-  if (!drush_shell_exec('type unzip')) {
+  if (!drush_shell_exec('unzip')) {
     return drush_set_error(dt('Missing dependency: unzip. Install it before using this command.'));
   }