diff --git a/cmd/stepd/handler.go b/cmd/stepd/handler.go
index b2951b8..3520f77 100644
--- a/cmd/stepd/handler.go
+++ b/cmd/stepd/handler.go
@@ -87,7 +87,7 @@ func (this *handler) serveFile (res http.ResponseWriter, req *http.Request, file
 	recorder := step.HTTPResponseRecorder { }
 	resetRecorder := func () {
 		recorder.Reset()
-		recorder.Header = res.Header().Clone()
+		recorder.Head = res.Header().Clone()
 	}
 	if contentType, ok := document.FrontMatter["content-type"]; ok {
 		recorder.Header().Set("Content-Type", contentType)
@@ -100,7 +100,7 @@ func (this *handler) serveFile (res http.ResponseWriter, req *http.Request, file
 
 	// execute document
 	data := step.HTTPData { }
-	data.Res.Header      = recorder.Header
+	data.Res.Header      = recorder.Header()
 	data.Res.WriteHeader = recorder.WriteHeader
 	data.Res.Reset       = resetRecorder
 	data.Req = req