diff --git a/classes/User.php b/classes/User.php
index 7a4564c80d..115bda09b7 100644
--- a/classes/User.php
+++ b/classes/User.php
@@ -137,6 +137,11 @@ class User extends Managed_DataObject
         return $this->uri;
     }
 
+    public function getNickname()
+    {
+        return $this->getProfile()->getNickname();
+    }
+
     function isSubscribed(Profile $other)
     {
         return $this->getProfile()->isSubscribed($other);
diff --git a/extlib/DB/DataObject.php b/extlib/DB/DataObject.php
index 828477d6e8..1232d184df 100755
--- a/extlib/DB/DataObject.php
+++ b/extlib/DB/DataObject.php
@@ -4309,6 +4309,7 @@ class DB_DataObject extends DB_DataObject_Overload
                 $case[strtolower($k)] = $k;
             }
             if ((substr(phpversion(),0,1) == 5) && isset($case[strtolower($element)])) {
+                file_put_contents('/tmp/backtrace', var_export(debug_backtrace(),true));
                 trigger_error("PHP5 set/get calls should match the case of the variable",E_USER_WARNING);
                 $element = strtolower($element);
             }
diff --git a/plugins/OStatus/actions/usersalmon.php b/plugins/OStatus/actions/usersalmon.php
index 550c034e49..3376e4d5ea 100644
--- a/plugins/OStatus/actions/usersalmon.php
+++ b/plugins/OStatus/actions/usersalmon.php
@@ -89,7 +89,7 @@ class UsersalmonAction extends SalmonAction
             // In reply to a notice either from or mentioning this user.
         } else if (!empty($context->attention) &&
                    (array_key_exists($this->user->uri, $context->attention) ||
-                    array_key_exists($common_profile_url($this->user->nickname),
+                    array_key_exists($common_profile_url($this->user->getNickname()),
                              $context->attention)))
         {
             // To the attention of this user.