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() {