diff --git a/internal/httputil/httputil.go b/internal/httputil/httputil.go
index b3390ba3..ba004e91 100644
--- a/internal/httputil/httputil.go
+++ b/internal/httputil/httputil.go
@@ -12,5 +12,9 @@ import (
 func WriteJSONResponse(w http.ResponseWriter, statusCode int, body interface{}) {
 	w.Header().Set("Content-Type", "application/json")
 	w.WriteHeader(statusCode)
-	json.NewEncoder(w).Encode(body)
+	data, err := json.Marshal(body)
+	if err != nil {
+		return
+	}
+	w.Write(data)
 }