diff --git a/nummi/main/templates/main/form/base.html b/nummi/main/templates/main/form/base.html
index def3515..65c6f6e 100644
--- a/nummi/main/templates/main/form/base.html
+++ b/nummi/main/templates/main/form/base.html
@@ -34,7 +34,7 @@
             </h2>
         {% endif %}
         {% block pre %}{% endblock %}
-        <form method="post">
+        <form method="post" enctype="multipart/form-data">
             {% csrf_token %}
             {% if instance|adding %}<input hidden name="next" value="{{ request.path }}" />{% endif %}
             {{ form }}