diff --git a/plugins/OStatus/OStatusPlugin.php b/plugins/OStatus/OStatusPlugin.php
index 46f986682a..89fa45f910 100644
--- a/plugins/OStatus/OStatusPlugin.php
+++ b/plugins/OStatus/OStatusPlugin.php
@@ -149,7 +149,8 @@ class OStatusPlugin extends Plugin
 
             // Also, we'll add in the salmon link
             $salmon = common_local_url($salmonAction, array('id' => $id));
-            $feed->addLink($salmon, array('rel' => 'salmon'));
+            $feed->addLink($salmon, array('rel' => Salmon::NS_REPLIES));
+            $feed->addLink($salmon, array('rel' => Salmon::NS_MENTIONS));
         }
 
         return true;
diff --git a/plugins/OStatus/actions/xrd.php b/plugins/OStatus/actions/xrd.php
index e6b694d61b..4350ad025a 100644
--- a/plugins/OStatus/actions/xrd.php
+++ b/plugins/OStatus/actions/xrd.php
@@ -80,10 +80,14 @@ class XrdAction extends Action
                               'href' => common_local_url('foaf',
                                                          array('nickname' => $nick)));
 
-        $salmon_url = common_local_url('salmon',
+        // Salmon
+        $salmon_url = common_local_url('usersalmon',
                                        array('id' => $this->user->id));
 
-        $xrd->links[] = array('rel' => 'salmon',
+        $xrd->links[] = array('rel' => Salmon::NS_REPLIES,
+                              'href' => $salmon_url);
+
+        $xrd->links[] = array('rel' => Salmon::NS_MENTIONS,
                               'href' => $salmon_url);
 
         // Get this user's keypair
diff --git a/plugins/OStatus/classes/Ostatus_profile.php b/plugins/OStatus/classes/Ostatus_profile.php
index 091056c541..c6f7378c4c 100644
--- a/plugins/OStatus/classes/Ostatus_profile.php
+++ b/plugins/OStatus/classes/Ostatus_profile.php
@@ -707,7 +707,7 @@ class Ostatus_profile extends Memcached_DataObject
 
         $huburi = $discover->getAtomLink('hub');
         $hints['hub'] = $huburi;
-        $salmonuri = $discover->getAtomLink('salmon');
+        $salmonuri = $discover->getAtomLink(Salmon::NS_REPLIES);
         $hints['salmon'] = $salmonuri;
 
         if (!$huburi) {
@@ -991,7 +991,7 @@ class Ostatus_profile extends Memcached_DataObject
                 $discover = new FeedDiscovery();
                 $discover->discoverFromFeedURL($hints['feedurl']);
             }
-            $salmonuri = $discover->getAtomLink('salmon');
+            $salmonuri = $discover->getAtomLink(Salmon::NS_REPLIES);
         }
 
         if (array_key_exists('hub', $hints)) {
@@ -1299,7 +1299,7 @@ class Ostatus_profile extends Memcached_DataObject
             case Discovery::PROFILEPAGE:
                 $profileUrl = $link['href'];
                 break;
-            case 'salmon':
+            case Salmon::NS_REPLIES:
                 $salmonEndpoint = $link['href'];
                 break;
             case Discovery::UPDATESFROM:
diff --git a/plugins/OStatus/lib/salmon.php b/plugins/OStatus/lib/salmon.php
index 9d4359f74f..c59de2a14e 100644
--- a/plugins/OStatus/lib/salmon.php
+++ b/plugins/OStatus/lib/salmon.php
@@ -28,6 +28,11 @@
  */
 class Salmon
 {
+
+    const NS_REPLIES = "http://salmon-protocol.org/ns/salmon-replies";
+
+    const NS_MENTIONS = "http://salmon-protocol.org/ns/salmon-mention";
+    
     /**
      * Sign and post the given Atom entry as a Salmon message.
      *