diff --git a/printer/templates/printer/newjob.html b/printer/templates/printer/newjob.html
index 2323c21f..49207f08 100644
--- a/printer/templates/printer/newjob.html
+++ b/printer/templates/printer/newjob.html
@@ -24,7 +24,7 @@
     {% endfor %}
   </div>
 
-  <button class="btn btn-primary btn-sm" role="button" id="add_one">{% trans "Add a file"%}</button>
+  <button type="button" class="btn btn-primary btn-sm" role="button" id="add_one">{% trans "Add a file"%}</button>
 
   {% bootstrap_button action_name name="options" button_type="submit" icon="star" %}
 </form>