diff --git a/JlSonic/api.jl b/JlSonic/api.jl
index b83d761..3100612 100644
--- a/JlSonic/api.jl
+++ b/JlSonic/api.jl
@@ -520,8 +520,9 @@ function giveconverted(file, bitrate, format)
     mime = suffix in keys(Mux.mimetypes) ? Mux.mimetypes[suffix] :
         "application/octet-stream"
     headers["Content-Type"] = mime
-    # headers["Content-Length"] = string(length(data))
-    return Dict(:body => take!(iodata),
+    data = take!(iodata)
+    headers["Content-Length"] = string(length(data))
+    return Dict(:body => data,
                 :headers => headers,
                 :file => join([split(basename(file), '.')[1:end-1],
                                ".oga"],""))