diff --git a/actions/apistatusesupdate.php b/actions/apistatusesupdate.php
index f2c70f5452..de00325494 100644
--- a/actions/apistatusesupdate.php
+++ b/actions/apistatusesupdate.php
@@ -46,7 +46,7 @@
     /api/statuses/update.:format
 
     @par Formats (:format)
-    xml, json
+    xml, json, atom
 
     @par HTTP Method(s)
     POST
@@ -339,6 +339,8 @@ class ApiStatusesUpdateAction extends ApiAuthAction
                 $this->showSingleXmlStatus($this->notice);
             } elseif ($this->format == 'json') {
                 $this->show_single_json_status($this->notice);
+            } elseif ($this->format == 'atom') {
+                $this->showSingleAtomStatus($this->notice);
             }
         }
     }
diff --git a/lib/router.php b/lib/router.php
index cd464d841c..ab6595b8f8 100644
--- a/lib/router.php
+++ b/lib/router.php
@@ -420,7 +420,7 @@ class Router
 
             $m->connect('api/statuses/update.:format',
                         array('action' => 'ApiStatusesUpdate',
-                              'format' => '(xml|json)'));
+                              'format' => '(xml|json|atom)'));
 
             $m->connect('api/statuses/destroy/:id.:format',
                         array('action' => 'ApiStatusesDestroy',