diff --git a/kfet/templates/kfet/kpsul.html b/kfet/templates/kfet/kpsul.html
index 75665f95..3a33bb42 100644
--- a/kfet/templates/kfet/kpsul.html
+++ b/kfet/templates/kfet/kpsul.html
@@ -795,27 +795,26 @@ $(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 = '') {
-        addcostDialog.open(
-            function(data) {
-                api_with_auth({
-                    url: Urls['kfet.kpsul.update_addcost'](),
-                    data: data,
-                    on_400: function(data) {
-                        askAddcost(getErrorsHtml(data));
-                    },
-                    next_focus: kpsul.account_manager,
-                });
-            },
-            errors,
-            kpsul.account_manager
-       );
+        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 callback(data) {
+            api_with_auth({
+                url: Urls['kfet.kpsul.update_addcost'](),
+                data: data,
+                on_400: function(data) {
+                    askAddcost(getErrorsHtml(data));
+                },
+                next_focus: kpsul.account_manager,
+            });
+        }
+
+        addcostDialog.open(callback, errors, kpsul.account_manager);
     }