diff --git a/src/ol/map.js b/src/ol/map.js
index 2fffe485fc..c4697c633d 100644
--- a/src/ol/map.js
+++ b/src/ol/map.js
@@ -101,6 +101,7 @@ ol.OL3_LOGO_URL = 'data:image/png;base64,' +
 
 /**
  * @type {Array.<ol.RendererType>}
+ * @const
  */
 ol.DEFAULT_RENDERER_TYPES = [
   ol.RendererType.CANVAS,