diff --git a/cs3/app/registry/v1beta1/resources.proto b/cs3/app/registry/v1beta1/resources.proto
index 8ffcbf60..0333d42d 100644
--- a/cs3/app/registry/v1beta1/resources.proto
+++ b/cs3/app/registry/v1beta1/resources.proto
@@ -94,6 +94,9 @@ message MimeTypeInfo {
   // OPTIONAL.
   // Whether the mime type is eligible for file creation in the web UI.
   // Defaults to false, i.e. files with this mime type can be opened
-  // but not directly allow_creationd from the web UI.
+  // but not directly created from the web UI.
   bool allow_creation = 8;
+  // OPTIONAL.
+  // name of the default application to open this mime type
+  string default_application = 9;
 }
diff --git a/docs/index.html b/docs/index.html
index 21f4fa3a..7e6f193d 100644
--- a/docs/index.html
+++ b/docs/index.html
@@ -5695,6 +5695,14 @@ <h3 id="cs3.app.registry.v1beta1.MimeTypeInfo">MimeTypeInfo</h3>
 but not directly allow_creationd from the web UI. </p></td>
                 </tr>
               
+                <tr>
+                  <td>default_application</td>
+                  <td><a href="#string">string</a></td>
+                  <td></td>
+                  <td><p>OPTIONAL.
+name of the default application to open this mime type </p></td>
+                </tr>
+              
             </tbody>
           </table>