diff --git a/horizon/templates/horizon/common/_workflow.html b/horizon/templates/horizon/common/_workflow.html
index 7b3b468965..4730af1bac 100644
--- a/horizon/templates/horizon/common/_workflow.html
+++ b/horizon/templates/horizon/common/_workflow.html
@@ -1,7 +1,7 @@
 {% load i18n %}
 {% with workflow.get_entry_point as entry_point %}
 <div class="workflow {% if modal %}modal hide{% else %}static_page{% endif %}">
-  <form {{ workflow.attr_string|safe }} action="{{ workflow.get_absolute_url }}" {% if add_to_field %}data-add-to-field="{{ add_to_field }}"{% endif %} method="POST">{% csrf_token %}
+  <form {{ workflow.attr_string|safe }} action="{{ workflow.get_absolute_url }}" {% if add_to_field %}data-add-to-field="{{ add_to_field }}"{% endif %} method="POST"{% if workflow.multipart %} enctype="multipart/form-data"{% endif %}>{% csrf_token %}
     {% if REDIRECT_URL %}<input type="hidden" name="{{ workflow.redirect_param_name }}" value="{{ REDIRECT_URL }}"/>{% endif %}
     <div class="modal-header">
     {% block modal-header %}
diff --git a/horizon/workflows/base.py b/horizon/workflows/base.py
index aa8b7ff483..78d6ad3a14 100644
--- a/horizon/workflows/base.py
+++ b/horizon/workflows/base.py
@@ -570,6 +570,7 @@ class Workflow(html.HTMLElement):
     success_message = _("%s completed successfully.")
     failure_message = _("%s did not complete.")
     redirect_param_name = "next"
+    multipart = False
     _registerable_class = Step
 
     def __unicode__(self):