diff --git a/src/pretix/presale/templates/pretixpresale/event/fragment_cart.html b/src/pretix/presale/templates/pretixpresale/event/fragment_cart.html
index c70eaf81b..5488b9f50 100644
--- a/src/pretix/presale/templates/pretixpresale/event/fragment_cart.html
+++ b/src/pretix/presale/templates/pretixpresale/event/fragment_cart.html
@@ -73,7 +73,7 @@
             <div class="download-desktop">
             {% if line.generate_ticket %}
                 {% for b in download_buttons %}
-                    <form action="{% if position_page %}{% eventurl event "presale:event.order.position.download" secret=line.web_secret order=order.code output=b.identifier pid=line.pk position=line.positionid %}{% else %}{% eventurl event "presale:event.order.download" secret=order.secret order=order.code output=b.identifier position=line.pk %}{% endif %}"
+                    <form action="{% if position_page and line.addon_to %}{% eventurl event "presale:event.order.position.download" secret=line.addon_to.web_secret order=order.code output=b.identifier pid=line.pk position=line.addon_to.positionid %}{% elif position_page %}{% eventurl event "presale:event.order.position.download" secret=line.web_secret order=order.code output=b.identifier pid=line.pk position=line.positionid %}{% else %}{% eventurl event "presale:event.order.download" secret=order.secret order=order.code output=b.identifier position=line.pk %}{% endif %}"
                             method="post" data-asynctask data-asynctask-download class="download-btn-form">
                         {% csrf_token %}
                         <button type="submit"
@@ -170,7 +170,7 @@
             <div class="download-mobile">
                 {% if line.generate_ticket %}
                 {% for b in download_buttons %}
-                    <form action="{% if position_page %}{% eventurl event "presale:event.order.position.download" secret=line.web_secret order=order.code pid=line.pk output=b.identifier position=line.positionid %}{% else %}{% eventurl event "presale:event.order.download" secret=order.secret order=order.code output=b.identifier position=line.id %}{% endif %}"
+                    <form action="{% if position_page and line.addon_to %}{% eventurl event "presale:event.order.position.download" secret=line.addon_to.web_secret order=order.code output=b.identifier pid=line.pk position=line.addon_to.positionid %}{% elif position_page %}{% eventurl event "presale:event.order.position.download" secret=line.web_secret order=order.code output=b.identifier pid=line.pk position=line.positionid %}{% else %}{% eventurl event "presale:event.order.download" secret=order.secret order=order.code output=b.identifier position=line.pk %}{% endif %}"
                         method="post" data-asynctask data-asynctask-download class="download-btn-form">
                         {% csrf_token %}
                         <button type="submit"