diff --git a/rdmo/core/templates/core/upload_form.html b/rdmo/core/templates/core/upload_form.html
index 4c7b89b458..02a4ff7758 100644
--- a/rdmo/core/templates/core/upload_form.html
+++ b/rdmo/core/templates/core/upload_form.html
@@ -9,7 +9,7 @@
     <input type="hidden" name="method" value="upload_file" />
 
     <div class="upload-form-field">
-        <input type="file" name="uploaded_file" />
+        <input type="file" name="uploaded_file" accept=".xml, application/xml" />
         <p>{% trans "Select file" %}</p>
     </div>