diff --git a/src/map/ext/Map.Geolocation.js b/src/map/ext/Map.Geolocation.js
index 38235516..05fe552a 100644
--- a/src/map/ext/Map.Geolocation.js
+++ b/src/map/ext/Map.Geolocation.js
@@ -14,7 +14,7 @@ L.Map.include({
 
 	locate: function (/*Object*/ options) {
 
-		options = this._locateOptions = L.extend(this._defaultLocateOptions, options);
+		options = this._locateOptions = L.extend({}, this._defaultLocateOptions, options);
 
 		if (!navigator.geolocation) {
 			this._handleGeolocationError({