diff --git a/gamutable_pipelines.php b/gamutable_pipelines.php
index 1a9217a..d76a7f2 100644
--- a/gamutable_pipelines.php
+++ b/gamutable_pipelines.php
@@ -54,9 +54,10 @@ function gamutable_crayons_vue_affichage_final($flux){
 		$id = intval($id)
 		and (!empty($GLOBALS['gamutable_rechargerJson_all']) and !in_array($objet, $GLOBALS['gamutable_rechargerJson_all']))
 	) {
-		$flux['data'] .= ' <script type="text/javascript"> app.rechargerJson('.$id.'); </script>';
+		$flux['data'] .= ' <script type="text/javascript">if ( typeof app === "function") {  app.rechargerJson('.$id.');} </script>';
 	} else {
-		$flux['data'] .= ' <script type="text/javascript"> app.rechargerJson(); </script>';
+		$flux['data'] .= ' <script type="text/javascript">if ( typeof app === "function") { app.rechargerJson();} </script>';
 	}
+
 	return $flux;
 }