diff --git a/backend/services/http/response.go b/backend/services/http/response.go
index ffd22875e..11d9b328d 100644
--- a/backend/services/http/response.go
+++ b/backend/services/http/response.go
@@ -11,6 +11,7 @@ func responseWithJSON(w http.ResponseWriter, res interface{}) {
 	if err != nil {
 		log.Println(err)
 	}
+	w.Header().Set("Content-Type", "application/json")
 	w.Write(body)
 }