diff --git a/leaflet.gridlayer.googlemutant/index.d.ts b/leaflet.gridlayer.googlemutant/index.d.ts
index 2f62268fcd..a5fa96ae80 100644
--- a/leaflet.gridlayer.googlemutant/index.d.ts
+++ b/leaflet.gridlayer.googlemutant/index.d.ts
@@ -5,7 +5,7 @@
 
 /// <reference types="leaflet" />
 
-declare namespace L.GridLayer {
+declare namespace L.gridLayer {
     export interface GoogleMutant extends L.GridLayer {
         setElementSize(e: HTMLElement, size: L.Point): void ;
     }
@@ -51,7 +51,7 @@ declare namespace L.GridLayer {
         maxZoom?: number;
         maxNativeZoom?: number;
         tileSize?: number | Point;
-        subdomains?: string | Array<string>;
+        subdomains?: string | string[];
         errorTileUrl?: string;
 
         /**
@@ -60,7 +60,7 @@ declare namespace L.GridLayer {
         attribution?: string;
 
         opacity?: number;
-        continuousWorld?: boolean,
+        continuousWorld?: boolean;
         noWrap?: boolean;
 
         /**
@@ -71,7 +71,7 @@ declare namespace L.GridLayer {
         /**
          * Google's map styles.
          */
-        styles?: GoogleMutantStyle[]
+        styles?: GoogleMutantStyle[];
     }
 
     export function googleMutant(options?: GoogleMutantOptions): GoogleMutant;
diff --git a/leaflet.gridlayer.googlemutant/leaflet.gridlayer.googlemutant-tests.ts b/leaflet.gridlayer.googlemutant/leaflet.gridlayer.googlemutant-tests.ts
index 53e8dc3e1c..797947f9c7 100644
--- a/leaflet.gridlayer.googlemutant/leaflet.gridlayer.googlemutant-tests.ts
+++ b/leaflet.gridlayer.googlemutant/leaflet.gridlayer.googlemutant-tests.ts
@@ -1,10 +1,10 @@
 let map = L.map('foo');
 
-let roads = L.GridLayer.googleMutant({
+let roads = L.gridLayer.googleMutant({
     type: 'roadmap'
 }).addTo(map);
 
-let styled = L.GridLayer.googleMutant({
+let styled = L.gridLayer.googleMutant({
     type: 'satellite',
     styles: [
         { elementType: 'labels', stylers: [ { visibility: 'off' } ] },