diff --git a/accounting/templates/accounting/trial-balance.html b/accounting/templates/accounting/trial-balance.html
index d76e33c..1d8c09f 100644
--- a/accounting/templates/accounting/trial-balance.html
+++ b/accounting/templates/accounting/trial-balance.html
@@ -130,7 +130,7 @@ First written: 2020/7/19
         <ul class="list-group d-lg-none trial-balance-list">
           {% for item in item_list %}
             <li class="list-group-item">
-              <a class="list-group-item-action d-flex justify-content-between align-items-center" href="{% url "accounting:ledger" item period.spec %}">
+              <a class="list-group-item-action d-flex justify-content-between align-items-center" href="{% url "accounting:ledger" item period %}">
                 {{ item.title }}
                 <div>
                   {% if item.debit is not None %}