diff --git a/src/applications/diffusion/request/DiffusionRequest.php b/src/applications/diffusion/request/DiffusionRequest.php
--- a/src/applications/diffusion/request/DiffusionRequest.php
+++ b/src/applications/diffusion/request/DiffusionRequest.php
@@ -254,7 +254,7 @@
   }
 
   public function getPath() {
-    return $this->path;
+    return ($this->path === null) ? '' : $this->path;
   }
 
   public function getLine() {
diff --git a/src/applications/diffusion/view/DiffusionBrowseTableView.php b/src/applications/diffusion/view/DiffusionBrowseTableView.php
--- a/src/applications/diffusion/view/DiffusionBrowseTableView.php
+++ b/src/applications/diffusion/view/DiffusionBrowseTableView.php
@@ -15,7 +15,11 @@
     $repository = $request->getRepository();
     require_celerity_resource('diffusion-css');
 
-    $base_path = trim($request->getPath(), '/');
+    $base_path = $request->getPath();
+    if ($base_path === null) {
+      $base_path = '';
+    }
+    $base_path = trim($base_path, '/');
     if ($base_path) {
       $base_path = $base_path.'/';
     }