diff --git a/config/alfresco/model/wcmModel.xml b/config/alfresco/model/wcmModel.xml
index 60013ac618..5e99c9858c 100644
--- a/config/alfresco/model/wcmModel.xml
+++ b/config/alfresco/model/wcmModel.xml
@@ -106,6 +106,11 @@
                <type>d:text</type>
                <mandatory>true</mandatory>
             </property>
+            <property name="wcm:mimetypeforrendition">
+               <title>Mimetype for generated assets</title>
+               <type>d:text</type>
+               <mandatory>true</mandatory>
+            </property>
             <property name="wcm:formsource">
                <title>Form Source</title>
                <type>d:noderef</type>
diff --git a/source/java/org/alfresco/model/WCMModel.java b/source/java/org/alfresco/model/WCMModel.java
index 19f20446de..a8ece96ee1 100644
--- a/source/java/org/alfresco/model/WCMModel.java
+++ b/source/java/org/alfresco/model/WCMModel.java
@@ -45,7 +45,8 @@ public interface WCMModel
     // An XML to something else tranformer aspect.
     public static final QName ASPECT_RENDERING_ENGINE = QName.createQName(NamespaceService.WCM_MODEL_1_0_URI, "renderingengine");
     public static final QName PROP_RENDERING_ENGINE_TYPE = QName.createQName(NamespaceService.WCM_MODEL_1_0_URI, "renderingenginetype");
-    public static final QName PROP_FILE_EXTENSION_FOR_RENDITION = QName.createQName(NamespaceService.WCM_MODEL_1_0_URI, "fileextensionfordatarendition");
+    public static final QName PROP_FILE_EXTENSION_FOR_RENDITION = QName.createQName(NamespaceService.WCM_MODEL_1_0_URI, "fileextensionforrendition");
+    public static final QName PROP_MIMETYPE_FOR_RENDITION = QName.createQName(NamespaceService.WCM_MODEL_1_0_URI, "mimetypeforrendition");
     public static final QName PROP_FORM_SOURCE = QName.createQName(NamespaceService.WCM_MODEL_1_0_URI, "formsource");
 
     public static final QName ASPECT_FORM_INSTANCE_DATA = QName.createQName(NamespaceService.WCM_MODEL_1_0_URI, "forminstancedata");