diff --git a/src/applications/phame/controller/PhameLiveController.php b/src/applications/phame/controller/PhameLiveController.php
index ba2b65d9f8..1287a33f35 100644
--- a/src/applications/phame/controller/PhameLiveController.php
+++ b/src/applications/phame/controller/PhameLiveController.php
@@ -87,7 +87,7 @@ abstract class PhameLiveController extends PhameController {
     $this->isExternal = $is_external;
     $this->isLive = $is_live;
 
-    if ($post_id) {
+    if (strlen($post_id)) {
       $post_query = id(new PhamePostQuery())
         ->setViewer($viewer)
         ->withIDs(array($post_id));
@@ -104,6 +104,8 @@ abstract class PhameLiveController extends PhameController {
 
       $post = $post_query->executeOne();
       if (!$post) {
+        // Not a valid Post
+        $this->blog = $blog;
         return new Aphront404Response();
       }