diff --git a/src/MarkerClusterGroup.js b/src/MarkerClusterGroup.js
index 50687c81f2..b68fdcf37e 100644
--- a/src/MarkerClusterGroup.js
+++ b/src/MarkerClusterGroup.js
@@ -93,8 +93,14 @@ L.MarkerClusterGroup = L.FeatureGroup.extend({
 
 		if (!this._topClusterLevel) {
 			this._generateInitialClusters();
+		} else if (this._needsClustering.length > 0) {
+			for (var i = this._needsClustering.length - 1; i >= 0; i--) {
+				this.addLayer(this._needsClustering[i]);
+			}
+			this._needsClustering = [];
 		}
 
+
 		this._map.on('zoomend', this._zoomEnd, this);
 		this._map.on('moveend', this._moveEnd, this);