diff --git a/plugins/OStatus/lib/salmon.php b/plugins/OStatus/lib/salmon.php
index 244fe4748b..3d25e15ad8 100644
--- a/plugins/OStatus/lib/salmon.php
+++ b/plugins/OStatus/lib/salmon.php
@@ -49,6 +49,7 @@ class Salmon
     public function post($endpoint_uri, $xml, Profile $actor)
     {
         if (empty($endpoint_uri)) {
+            common_debug('No endpoint URI for Salmon post to '.$actor->getUri());
             return false;
         }