diff --git a/src/components/views/rooms/RoomSublist2.tsx b/src/components/views/rooms/RoomSublist2.tsx
index dd0d591c53..d3bb19729d 100644
--- a/src/components/views/rooms/RoomSublist2.tsx
+++ b/src/components/views/rooms/RoomSublist2.tsx
@@ -235,6 +235,7 @@ export default class RoomSublist2 extends React.Component<IProps, IState> {
                 // we have a cutoff condition - add the button to show all
 
                 // we +1 to account for the room we're about to hide with our 'show more' button
+                // this results in the button always being 1+, and not needing an i18n `count`.
                 const numMissing = (tiles.length - visibleTiles.length) + 1;
 
                 // TODO: CSS TBD
diff --git a/src/stores/room-list/ListLayout.ts b/src/stores/room-list/ListLayout.ts
index fd57a03ca1..b41d56be3e 100644
--- a/src/stores/room-list/ListLayout.ts
+++ b/src/stores/room-list/ListLayout.ts
@@ -14,6 +14,8 @@ See the License for the specific language governing permissions and
 limitations under the License.
 */
 
+import { TagID } from "./models";
+
 const TILE_HEIGHT_PX = 34;
 
 interface ISerializedListLayout {
@@ -23,7 +25,7 @@ interface ISerializedListLayout {
 export class ListLayout {
     private _n = 0;
 
-    constructor(public readonly tagId) {
+    constructor(public readonly tagId: TagID) {
         const serialized = localStorage.getItem(this.key);
         if (serialized) {
             // We don't use the setters as they cause writes.