diff --git a/commands/http/handler.go b/commands/http/handler.go
index 329e8fa29..a409a67c3 100644
--- a/commands/http/handler.go
+++ b/commands/http/handler.go
@@ -95,8 +95,8 @@ func (i Handler) ServeHTTP(w http.ResponseWriter, r *http.Request) {
 
 	out, err := res.Reader()
 	if err != nil {
-		w.WriteHeader(http.StatusInternalServerError)
 		w.Header().Set(contentTypeHeader, "text/plain")
+		w.WriteHeader(http.StatusInternalServerError)
 		w.Write([]byte(err.Error()))
 		return
 	}