diff --git a/response.go b/response.go
index 525023a..2b1047b 100644
--- a/response.go
+++ b/response.go
@@ -28,10 +28,10 @@ type header struct {
 }
 
 // TODO add doc
-func (rs *Response) BufferPDF(name string, b bytes.Buffer) *Response {
+func (rs *Response) BufferFile(name string, filetype string, b bytes.Buffer) *Response {
 
 	if rs.isTerminated == false {
-		rs.HttpResponseWriter.Header().Add("Content-Type", "application/pdf")
+		rs.HttpResponseWriter.Header().Add("Content-Type", filetype)
 		rs.HttpResponseWriter.Header().Add("Content-Disposition", "attachment; filename="+name)
 		b.WriteTo(rs.HttpResponseWriter)
 	}