From be1267e96abb6b3c23ecf2496ae135d8b736323c Mon Sep 17 00:00:00 2001
From: Christopher Baines <mail@cbaines.net>
Date: Thu, 29 May 2014 22:20:25 +0100
Subject: Check that the level exists before trying to remove it

---
 leaflet-indoor.js | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/leaflet-indoor.js b/leaflet-indoor.js
index be73a6e..ee3fd52 100644
--- a/leaflet-indoor.js
+++ b/leaflet-indoor.js
@@ -71,7 +71,10 @@ L.Indoor = L.Class.extend({
         }
     },
     onRemove: function (map) {
-        this._map.removeLayer(this._layers[this._level]);
+        if (this._level in this._layers) {
+            this._map.removeLayer(this._layers[this._level]);
+        }
+
         this._map = null;
     },
     addData: function(data) {
-- 
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