diff --git a/templates/partials/tags.html b/templates/partials/tags.html
index 92f6cf8..6c548d6 100644
--- a/templates/partials/tags.html
+++ b/templates/partials/tags.html
@@ -53,7 +53,7 @@
             confirmButtonText: 'Add',
             showLoaderOnConfirm: true,
             preConfirm: (tag) => {
-                return fetch(`{{ url_for('add_tag') }}?tag=${encodeURIComponent(tag)}&filter=${encodeURIComponent(window.location.search)}{% if person_id %} f'&person_id={person_id}' {% endif%}`)
+                return fetch(`{{ url_for('add_tag') }}?tag=${encodeURIComponent(tag)}&filter=${encodeURIComponent(window.location.search)}{% if person_id %} {{ "&person_id={person_id}".format(person_id=person_id) | safe }} {% endif%}`)
                     .then(response => {
                         if (!response.ok) {
                             throw new Error(response.statusText)