diff --git a/src/ol/map.js b/src/ol/map.js
index d5a5806526..5223a1ced5 100644
--- a/src/ol/map.js
+++ b/src/ol/map.js
@@ -1010,6 +1010,14 @@ ol.Map.prototype.isDef = function() {
 };
 
 
+/**
+ * @return {boolean} Is rendered.
+ */
+ol.Map.prototype.isRendered = function() {
+  return !goog.isNull(this.frameState_);
+};
+
+
 /**
  * Render.
  */