diff --git a/gaurun/stat.go b/gaurun/stat.go
index 81ee2ff..f6477e2 100644
--- a/gaurun/stat.go
+++ b/gaurun/stat.go
@@ -53,7 +53,7 @@ func StatsHandler(w http.ResponseWriter, r *http.Request) {
 		return
 	}
 
-	w.Header().Set("Content-Type", "application/json")
+	w.Header().Set("Content-Type", "application/json; charset=utf-8")
 	w.Header().Set("Server", serverHeader())
 	w.Write(respBody)
 }