diff --git a/edit.php b/edit.php
index 7a07955..1e026ce 100644
--- a/edit.php
+++ b/edit.php
@@ -132,7 +132,6 @@ function validation($data, $files) {
         $instance->status         = $data->status;
         $instance->name           = $data->name;
         $instance->cost           = (int) $data->cost;
-        $instance->currency       = $data->currency;
         $instance->roleid         = $data->roleid;
         $instance->enrolperiod    = $data->enrolperiod;
         $instance->enrolstartdate = $data->enrolstartdate;
@@ -149,7 +148,6 @@ function validation($data, $files) {
             'status'=>$data->status,
             'name'=>$data->name,
             'cost'=> (int) $data->cost,
-            'currency'=>$data->currency,
             'roleid'=>$data->roleid,
             'enrolperiod'=>$data->enrolperiod,
             'enrolstartdate'=>$data->enrolstartdate,
diff --git a/settings.php b/settings.php
index 2df9868..63077e6 100644
--- a/settings.php
+++ b/settings.php
@@ -7,7 +7,6 @@
  */
 
 defined('MOODLE_INTERNAL') || die();
-global $PAGE, $ADMIN;
 
 if ($ADMIN->fulltree) {
 
diff --git a/version.php b/version.php
index 9dbf9d7..10efc02 100644
--- a/version.php
+++ b/version.php
@@ -1,7 +1,7 @@
 <?php
 defined('MOODLE_INTERNAL') || die();
-$plugin = enrol_get_plugin('idpay');
+
 $plugin->version   = 2015051100;        // The current plugin version (Date: YYYYMMDDXX)
 $plugin->requires  = 2015050500;        // Requires this Moodle version
 $plugin->component = 'enrol_idpay';    // Full name of the plugin (used for diagnostics)
-$plugin->cron      = 60;
\ No newline at end of file
+$plugin->cron      = 60;