diff --git a/group/index.php b/group/index.php
index 4b75d8ef8a5..0510fd1f22f 100644
--- a/group/index.php
+++ b/group/index.php
@@ -205,7 +205,7 @@ echo '<p><input type="submit" name="act_updatemembers" id="updatemembers" value=
         . get_string('showmembersforgroup', 'group') . '" /></p>'."\n";
 echo '<p><input type="submit" '. $showeditgroupsettingsform_disabled . ' name="act_showgroupsettingsform" id="showeditgroupsettingsform" value="'
         . get_string('editgroupsettings', 'group') . '" /></p>'."\n";
-echo '<p><input type="submit" '. $deletegroup_disabled . ' name="act_deletegroup" onclick="onDeleteGroup()" id="deletegroup" value="'
+echo '<p><input type="submit" '. $deletegroup_disabled . ' name="act_deletegroup" id="deletegroup" value="'
         . get_string('deleteselectedgroup', 'group') . '" /></p>'."\n";
 
 echo '<p><input type="submit" name="act_showcreateorphangroupform" id="showcreateorphangroupform" value="'