diff --git a/mod_form.php b/mod_form.php
index c68fd1e..82dd086 100755
--- a/mod_form.php
+++ b/mod_form.php
@@ -166,10 +166,10 @@ class mod_game_mod_form extends moodleform_mod {
         $mform->addElement('text', 'grade', get_string( 'grademax', 'grades'), array('size' => 4));
         $mform->setType('grade', PARAM_INT);
         $gradingtypeoptions = array();
-        $gradingtypeoptions[0] = get_string('gradehighest','game');
-        $gradingtypeoptions[1] = get_string('gradeaverage','game');
-        $gradingtypeoptions[2] = get_string('attemptfirst','game');
-        $gradingtypeoptions[3] = get_string('attemptlast','game');
+        $gradingtypeoptions[ GAME_GRADEHIGHEST] = get_string('gradehighest','game');
+        $gradingtypeoptions[ GAME_GRADEAVERAGE] = get_string('gradeaverage','game');
+        $gradingtypeoptions[ GAME_ATTEMPTFIRST] = get_string('attemptfirst','game');
+        $gradingtypeoptions[ GAME_ATTEMPTLAST] = get_string('attemptlast','game');
         $mform->addElement('select', 'grademethod', get_string('grademethod','game'), $gradingtypeoptions);
         
         // Open and close dates.
diff --git a/version.php b/version.php
index ef67200..fb78b65 100755
--- a/version.php
+++ b/version.php
@@ -11,7 +11,7 @@
 defined('MOODLE_INTERNAL') || die();
 
 $module->component = 'mod_game';  // Full name of the plugin (used for diagnostics)
-$module->version   = 2013071501;  // The current module version (Date: YYYYMMDDXX)
+$module->version   = 2013071601;  // The current module version (Date: YYYYMMDDXX)
 $module->requires  = 2010112400;  // Requires Moodle 2.0
 $module->cron      = 0;           // Period for cron to check this module (secs)
-$module->release   = '3.7.15';
+$module->release   = '3.7.16';