diff --git a/modules/og_actions/og_actions.module b/modules/og_actions/og_actions.module
index 0bc1345..c9bd7f6 100755
--- a/modules/og_actions/og_actions.module
+++ b/modules/og_actions/og_actions.module
@@ -229,10 +229,17 @@ function og_remove_group_action_submit($form, &$form_state) {
  */
 function og_subscribe_user_action($account, $context) {
   if (isset($context['groups'])) {
+    $groups = array();
     foreach ($context['groups'] as $gid) {
-      og_save_subscription($gid, $account->uid, array('is_active' => 1));
+      // Add user if they are not already an active member.
+      if (empty($account->og_groups[$gid])) {
+        og_save_subscription($gid, $account->uid, array('is_active' => 1));
+        $groups[] = $gid;
+      }
+    }
+    if ($groups) {
+      watchdog('action', 'Subscribed user %name to groups %groups.', array('%name' => $account->name, '%groups' => implode(',', $groups)));
     }
-    watchdog('action', 'Subscribed user %name to groups %groups.', array('%name' => $account->name, '%groups' => implode(',', $context['groups'])));
   }
 }