diff --git a/dist/LeafletEnvironmentalLayers.js b/dist/LeafletEnvironmentalLayers.js
index 1dce80799..a33ad16c4 100644
--- a/dist/LeafletEnvironmentalLayers.js
+++ b/dist/LeafletEnvironmentalLayers.js
@@ -30371,7 +30371,7 @@ L.Control.LayersBrowser = L.Control.Layers.extend({
     }
 
     map.on('overlayremove', function(e) {
-      const mapId = this._map._container.id;
+      const mapId = this._map && this._map._container.id;
       var layerInfo = this._getLayerData(e);
       var selector = '#' + mapId + '-menu-' + e.name + ' .layer-name';
       var listLayerSelector = '#' + mapId + '-' + e.name + ' .layer-list-name';
diff --git a/spec/javascripts/basicImplementation.spec.js b/spec/javascripts/basicImplementation.spec.js
index 7bee76aad..f52f1fc87 100644
--- a/spec/javascripts/basicImplementation.spec.js
+++ b/spec/javascripts/basicImplementation.spec.js
@@ -9,6 +9,7 @@ describe('Basic LEL Implementation', function() {
 
   beforeEach(function () {
     mapContainer = document.createElement('div');
+    mapContainer.id = 'map';
     map = L.map(mapContainer, { }).setView([43, -83], 8);
   });
 
@@ -29,8 +30,8 @@ describe('Basic LEL Implementation', function() {
       display: ['eonetFiresLayer']
     }).addTo(map);
 
-    expect(mapContainer.querySelector('#menu-eonetFiresLayer')).toExist();
-    expect(mapContainer.querySelector('#menu-Unearthing')).toExist();
+    expect(mapContainer.querySelector('#map-menu-eonetFiresLayer')).toExist();
+    expect(mapContainer.querySelector('#map-menu-Unearthing')).toExist();
   });
 
   it('exclude specific layers', function() {
@@ -38,8 +39,8 @@ describe('Basic LEL Implementation', function() {
       exclude: ['eonetFiresLayer']
     }).addTo(map);
     
-    expect(mapContainer.querySelector('#menu-eonetFiresLayer')).not.toExist();
-    expect(mapContainer.querySelector('#menu-Unearthing')).toExist();
+    expect(mapContainer.querySelector('#map-menu-eonetFiresLayer')).not.toExist();
+    expect(mapContainer.querySelector('#map-menu-Unearthing')).toExist();
   });
 
   it('display shows layer', function() {
@@ -47,8 +48,8 @@ describe('Basic LEL Implementation', function() {
       display: ['eonetFiresLayer'],
     }).addTo(map);
 
-    expect(mapContainer.querySelector('#menu-eonetFiresLayer .leaflet-control-layers-selector').checked).toBe(true);
-    expect(mapContainer.querySelector('#menu-Unearthing .leaflet-control-layers-selector').checked).toBe(false);
+    expect(mapContainer.querySelector('#map-menu-eonetFiresLayer .leaflet-control-layers-selector').checked).toBe(true);
+    expect(mapContainer.querySelector('#map-menu-Unearthing .leaflet-control-layers-selector').checked).toBe(false);
   });
 
   it('addLayersToMap shows all included layers', function() {
@@ -58,8 +59,8 @@ describe('Basic LEL Implementation', function() {
     }).addTo(map);
 
     expect(mapContainer.querySelector('.leaflet-control-container .leaflet-control-layers-menu')).toExist();
-    expect(mapContainer.querySelector('#menu-eonetFiresLayer .leaflet-control-layers-selector').checked).toBe(true);
-    expect(mapContainer.querySelector('#menu-Unearthing .leaflet-control-layers-selector').checked).toBe(true);
+    expect(mapContainer.querySelector('#map-menu-eonetFiresLayer .leaflet-control-layers-selector').checked).toBe(true);
+    expect(mapContainer.querySelector('#map-menu-Unearthing .leaflet-control-layers-selector').checked).toBe(true);
   });
 
   it('simpleLayerControl shows simple menu', function() {
diff --git a/src/util/layersBrowser.js b/src/util/layersBrowser.js
index 688b70256..6010847cd 100644
--- a/src/util/layersBrowser.js
+++ b/src/util/layersBrowser.js
@@ -211,7 +211,7 @@ L.Control.LayersBrowser = L.Control.Layers.extend({
     }
 
     map.on('overlayremove', function(e) {
-      const mapId = this._map._container.id;
+      const mapId = this._map && this._map._container.id;
       var layerInfo = this._getLayerData(e);
       var selector = '#' + mapId + '-menu-' + e.name + ' .layer-name';
       var listLayerSelector = '#' + mapId + '-' + e.name + ' .layer-list-name';