diff --git a/Web/templates/library_table.html b/Web/templates/library_table.html
index eced068..bf83123 100644
--- a/Web/templates/library_table.html
+++ b/Web/templates/library_table.html
@@ -939,7 +939,7 @@
             const response = await fetch(`/api/is_student_card/${encodeURIComponent(code)}`, {
                 method: 'POST',
                 headers: {
-                    'Content-Type': 'application/json'
+                    'Content-Type': 'application/json',
                     // Falls du in Flask CSRF-Protect nutzt, muss der Token mitgesendet werden:
                     'X-CSRFToken': '{{ csrf_token }}',
                     'X-CSRF-Token': '{{ csrf_token }}'