diff --git a/add_asset.html b/add_asset.html
index 0c2a654..dfe0db4 100644
--- a/add_asset.html
+++ b/add_asset.html
@@ -143,7 +143,7 @@
 {{#foreach from=$prefix_array item="code"}}
 	{{:assign var="pattern_array." value="%s*"|args:$code}}
 {{/foreach}}
-{{:assign patterns=$pattern_array|implode:"|"}}
+{{:assign var="patterns" value=$pattern_array|implode:"|"}}
 
 <div id="erreur" class="hidden">
 	<p class="block error">La date choisie n'est dans aucun exercice ouvert !</p>