diff --git a/smash/web/forms/voucher_forms.py b/smash/web/forms/voucher_forms.py
index efb1c590c9f7d526d172a7c332d1ed8cebb4bd03..7768920a81e851f7cc00a4174f3c18b28eb48fb6 100644
--- a/smash/web/forms/voucher_forms.py
+++ b/smash/web/forms/voucher_forms.py
@@ -8,7 +8,7 @@ from django.utils import timezone
 from web.algorithm import VerhoeffAlgorithm
 from web.forms.forms import DATEPICKER_DATE_ATTRS
 from web.models import VoucherType, VoucherTypePrice, Voucher, Worker
-from web.models.constants import VOUCHER_STATUS_NEW, VOUCHER_STATUS_USED, VOUCHER_STATUS_EXPIRED
+from web.models.constants import VOUCHER_STATUS_USED, VOUCHER_STATUS_EXPIRED
 from web.models.worker_study_role import WORKER_VOUCHER_PARTNER
 
 logger = logging.getLogger(__name__)
@@ -58,7 +58,7 @@ class VoucherForm(ModelForm):
             self.fields['hours'].widget.attrs['readonly'] = True
             self.fields['usage_partner'].widget.attrs['readonly'] = True
 
-            if instance.status == VOUCHER_STATUS_USED or instance.status == VOUCHER_STATUS_EXPIRED:
+            if instance.status in [VOUCHER_STATUS_USED, VOUCHER_STATUS_EXPIRED]:
                 self.fields['status'].widget.attrs['readonly'] = True
                 self.fields['feedback'].widget.attrs['readonly'] = True
 
diff --git a/smash/web/templates/vouchers/add_edit.html b/smash/web/templates/vouchers/add_edit.html
index c3aa458e57174ffe125fba60f612f69f1edf9ad0..c0083e92cc23d2b666a8a60547a0237e04123da5 100644
--- a/smash/web/templates/vouchers/add_edit.html
+++ b/smash/web/templates/vouchers/add_edit.html
@@ -61,7 +61,7 @@
                     </form>
                     {% if voucher.id %}
                         <h3 class="box-title">List of voucher partner sessions
-                            {% if voucher.status == 'NEW' or voucher.status == 'IN_USE' %}
+                            {% if voucher.status in 'NEW,IN_USE' %}
 
                                 <a title="add a new voucher partner session"
                                    id="add-voucher-partner-session"