diff --git a/constants.go b/constants.go
index 203439c5..2328bde6 100644
--- a/constants.go
+++ b/constants.go
@@ -7,12 +7,14 @@ package restful
 const (
 	MIME_XML   = "application/xml"          // Accept or Content-Type used in Consumes() and/or Produces()
 	MIME_JSON  = "application/json"         // Accept or Content-Type used in Consumes() and/or Produces()
+	MIME_ZIP   = "application/zip"          // Accept or Content-Type used in Consumes() and/or Produces()
 	MIME_OCTET = "application/octet-stream" // If Content-Type is not present in request, use the default
 
 	HEADER_Allow                         = "Allow"
 	HEADER_Accept                        = "Accept"
 	HEADER_Origin                        = "Origin"
 	HEADER_ContentType                   = "Content-Type"
+	HEADER_ContentDisposition            = "Content-Disposition"
 	HEADER_LastModified                  = "Last-Modified"
 	HEADER_AcceptEncoding                = "Accept-Encoding"
 	HEADER_ContentEncoding               = "Content-Encoding"
diff --git a/response.go b/response.go
index 8f0b56aa..a41a92cc 100644
--- a/response.go
+++ b/response.go
@@ -109,6 +109,9 @@ func (r *Response) EntityWriter() (EntityReaderWriter, bool) {
 		if DefaultResponseMimeType == MIME_XML {
 			return entityAccessRegistry.accessorAt(MIME_XML)
 		}
+		if DefaultResponseMimeType == MIME_ZIP {
+			return entityAccessRegistry.accessorAt(MIME_ZIP)
+		}
 		// Fallback to whatever the route says it can produce.
 		// https://www.w3.org/Protocols/rfc2616/rfc2616-sec14.html
 		for _, each := range r.routeProduces {