diff --git a/contribs/gmf/src/datasource/Manager.js b/contribs/gmf/src/datasource/Manager.js
index dbdfca003823..7284218d0ee7 100644
--- a/contribs/gmf/src/datasource/Manager.js
+++ b/contribs/gmf/src/datasource/Manager.js
@@ -731,6 +731,9 @@ const exports = class {
    */
   getDataSourceLayer_(dataSource) {
     dataSource = /** @type {!gmf.DataSource} */ (dataSource);
+    if (dataSource.gmfLayer == undefined) {
+      return;
+    }
     const id = olBase.getUid(dataSource.gmfLayer);
     if (id == undefined) {
       return;