diff --git a/src/applications/diffusion/controller/DiffusionRepositoryController.php b/src/applications/diffusion/controller/DiffusionRepositoryController.php
--- a/src/applications/diffusion/controller/DiffusionRepositoryController.php
+++ b/src/applications/diffusion/controller/DiffusionRepositoryController.php
@@ -628,6 +628,7 @@
     $header->addActionLink($button);
     $browse_panel->setHeader($header);
 
+    $locate_panel = null;
     if ($repository->canUsePathTree()) {
       Javelin::initBehavior(
         'diffusion-locate-file',