diff --git includes/og.rules.inc includes/og.rules.inc
index c61c075..18e9ba6 100644
--- includes/og.rules.inc
+++ includes/og.rules.inc
@@ -172,9 +172,13 @@ function og_rules_action_audience_remove_group(&$node, &$group) {
 
 /**
  * Action: Subscribe user to group.
+ * 
+ * Pass $include_admins = FALSE so it's possible to subscribe site admins too.
+ * If user doesn't want to subscribe admins, it's possible to check user role
+ * by Rules conditions. 
  */
 function og_rules_action_subscribe_user($user, $node, $settings) {
-  if (!og_is_group_member($node->nid, $user)) {
+  if (!og_is_group_member($node->nid, FALSE, $user->uid)) {
     og_save_subscription($node->nid, $user->uid, array('is_active' => (int)$settings['is_active']));
   }
 }
@@ -275,10 +279,23 @@ function og_rules_condition_info() {
  * Condition: User is group member.
  */
 function og_rules_condition_user_in_group($user, $node, $settings) {
-  return !empty($node->nid) && og_is_group_member($node->nid, $user);
+  return !empty($node->nid) && og_is_group_member($node->nid, $settings['include_admins'], $user->uid);
 }
 
 /**
+ * Condition: User is group member.
+ */
+function og_rules_condition_user_in_group_form($settings, &$form) {
+  $form['settings']['include_admins'] = array(
+    '#type' => 'checkbox',
+    '#title' => t('Include admins'),
+    '#description' => t('When enabled, users with "administer nodes" permission will always be treated as group members.'),
+    '#default_value' => $settings['include_admins'],
+  );
+}
+
+
+/**
  * Condition: Content is a group node.
  */
 function og_rules_condition_content_is_group($node, $settings) {