diff --git a/source/java/org/alfresco/rest/framework/webscripts/AbstractResourceWebScript.java b/source/java/org/alfresco/rest/framework/webscripts/AbstractResourceWebScript.java
index 0114e33d69..986dda1a37 100644
--- a/source/java/org/alfresco/rest/framework/webscripts/AbstractResourceWebScript.java
+++ b/source/java/org/alfresco/rest/framework/webscripts/AbstractResourceWebScript.java
@@ -163,6 +163,10 @@ public abstract class AbstractResourceWebScript extends ApiWebScript implements
                         final ResourceOperation operation = resource.getMetaData().getOperation(getHttpMethod());
                         Object result = executeAction(resource, params);
                         setResponse(res,operation.getSuccessStatus(),ApiWebScript.CACHE_NEVER, DEFAULT_JSON_CONTENT);
+                        if (result instanceof BinaryResource)
+                        {
+                            return result; //don't postprocess it.
+                        }
                         return helper.processAdditionsToTheResponse(res, resource.getMetaData().getApi(), entityCollectionName, params, result);
                     }
                 }, isReadOnly, true);