diff --git a/src/layer/marker/Marker.Popup.js b/src/layer/marker/Marker.Popup.js
index 9597c297..3d4768d4 100644
--- a/src/layer/marker/Marker.Popup.js
+++ b/src/layer/marker/Marker.Popup.js
@@ -5,7 +5,9 @@
 L.Marker.include({
 	openPopup: function () {
 		this._popup.setLatLng(this._latlng);
-		this._map.openPopup(this._popup);
+		if (this._map) {
+			this._map.openPopup(this._popup);
+		}
 
 		return this;
 	},