diff --git a/kfet/templates/kfet/kpsul.html b/kfet/templates/kfet/kpsul.html
index c55bbfd7..75665f95 100644
--- a/kfet/templates/kfet/kpsul.html
+++ b/kfet/templates/kfet/kpsul.html
@@ -798,6 +798,7 @@ $(document).ready(function() {
     var addcostDialog = new UserDialog({
         'title': 'Majoration',
         'content': '<input type="text" placeholder="Trigramme" autocomplete="off" name="trigramme" spellcheck="false" style="text-transform:uppercase" autofocus><input type="number" lang="en" step="0.01" min="0.01" placeholder="€" name="amount">',
+        'callback_as_dict': true,
     });
 
     function askAddcost(errors = '') {