diff --git a/package-lock.json b/package-lock.json
index b3e2df6..2b6f4f1 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -43,7 +43,7 @@
         "sass": "^1.52",
         "ts-jest": "^27.1.4",
         "ts-node": "^10.8.1",
-        "typescript": "^4.5",
+        "typescript": "^4.7",
         "vite": "2.9.12",
         "vite-plugin-svg-sprite-component": "^1.0",
         "vue-tsc": "0.37.9"
@@ -9400,9 +9400,9 @@
       }
     },
     "node_modules/typescript": {
-      "version": "4.5.5",
-      "resolved": "https://registry.npmjs.org/typescript/-/typescript-4.5.5.tgz",
-      "integrity": "sha512-TCTIul70LyWe6IJWT8QSYeA54WQe8EjQFU4wY52Fasj5UKx88LNYKCgBEHcOMOrFF1rKGbD8v/xcNWVUq9SymA==",
+      "version": "4.7.3",
+      "resolved": "https://registry.npmjs.org/typescript/-/typescript-4.7.3.tgz",
+      "integrity": "sha512-WOkT3XYvrpXx4vMMqlD+8R8R37fZkjyLGlxavMc4iB8lrl8L0DeTcHbYgw/v0N/z9wAFsgBhcsF0ruoySS22mA==",
       "dev": true,
       "bin": {
         "tsc": "bin/tsc",
@@ -16781,9 +16781,9 @@
       }
     },
     "typescript": {
-      "version": "4.5.5",
-      "resolved": "https://registry.npmjs.org/typescript/-/typescript-4.5.5.tgz",
-      "integrity": "sha512-TCTIul70LyWe6IJWT8QSYeA54WQe8EjQFU4wY52Fasj5UKx88LNYKCgBEHcOMOrFF1rKGbD8v/xcNWVUq9SymA==",
+      "version": "4.7.3",
+      "resolved": "https://registry.npmjs.org/typescript/-/typescript-4.7.3.tgz",
+      "integrity": "sha512-WOkT3XYvrpXx4vMMqlD+8R8R37fZkjyLGlxavMc4iB8lrl8L0DeTcHbYgw/v0N/z9wAFsgBhcsF0ruoySS22mA==",
       "dev": true
     },
     "unbox-primitive": {
diff --git a/package.json b/package.json
index def4dff..3fd5709 100644
--- a/package.json
+++ b/package.json
@@ -49,7 +49,7 @@
     "sass": "^1.52",
     "ts-jest": "^27.1.4",
     "ts-node": "^10.8.1",
-    "typescript": "^4.5",
+    "typescript": "^4.7",
     "vite": "2.9.12",
     "vite-plugin-svg-sprite-component": "^1.0",
     "vue-tsc": "0.37.9"
diff --git a/src/leaflet/control/LiveAtlasLayerControl.ts b/src/leaflet/control/LiveAtlasLayerControl.ts
index b9880ae..952a15c 100644
--- a/src/leaflet/control/LiveAtlasLayerControl.ts
+++ b/src/leaflet/control/LiveAtlasLayerControl.ts
@@ -49,7 +49,7 @@ export class LiveAtlasLayerControl extends Control.Layers {
 
 	constructor(baseLayers?: LayersObject, overlays?: LayersObject, options?: LayersOptions) {
 		// noinspection JSUnusedGlobalSymbols
-		super(baseLayers, overlays, Object.assign(options, {
+		super(baseLayers, overlays, Object.assign(options || {}, {
 			sortLayers: true,
 			sortFunction: (layer1: Layer, layer2: Layer, name1: string, name2: string) => {
 				const priority1 = this._layerPositions.get(layer1) || 0,