diff --git a/src/formio/components/map.ts b/src/formio/components/map.ts
index 79fda20..aaebcac 100644
--- a/src/formio/components/map.ts
+++ b/src/formio/components/map.ts
@@ -41,6 +41,10 @@ export interface MapComponentSchema
     lat?: number;
     lng?: number;
   };
+  /**
+   * The tile layer identifier used for the map component tile layer.
+   */
+  tileLayerIdentifier?: string;
   /**
    * If true, the backend must apply the globally configured defaults to a particular
    * map instance. This results in populating `defaultZoom` and `initialCenter`, so for