diff --git a/src/material-experimental/mdc-list/testing/public-api.ts b/src/material-experimental/mdc-list/testing/public-api.ts
index 0d1824ed39b3..fcf12ca761e3 100644
--- a/src/material-experimental/mdc-list/testing/public-api.ts
+++ b/src/material-experimental/mdc-list/testing/public-api.ts
@@ -11,4 +11,4 @@ export * from './list-harness';
 export * from './list-harness-filters';
 export * from './nav-list-harness';
 export * from './selection-list-harness';
-export {MatListItemSection} from './list-item-harness-base';
+export {MatListItemSection, MatSubheaderHarness, MatListItemType} from './list-item-harness-base';