diff --git a/packages/ckeditor5-list/src/documentlist/utils/listwalker.ts b/packages/ckeditor5-list/src/documentlist/utils/listwalker.ts
index f9745e83aa6..95130c29732 100644
--- a/packages/ckeditor5-list/src/documentlist/utils/listwalker.ts
+++ b/packages/ckeditor5-list/src/documentlist/utils/listwalker.ts
@@ -216,7 +216,7 @@ export function* iterateSiblingListBlocks(
 	direction: 'forward' | 'backward' = 'forward'
 ): IterableIterator<ListIteratorValue> {
 	const isForward = direction == 'forward';
-	const previousNodesByIndent = []; // Last seen nodes of lower indented lists.
+	const previousNodesByIndent: Array<ListElement> = []; // Last seen nodes of lower indented lists.
 	let previous = null;
 
 	while ( isListItemBlock( node ) ) {
diff --git a/packages/ckeditor5-list/src/tododocumentlist/tododocumentlistediting.ts b/packages/ckeditor5-list/src/tododocumentlist/tododocumentlistediting.ts
index 7beca563929..570facf16fc 100644
--- a/packages/ckeditor5-list/src/tododocumentlist/tododocumentlistediting.ts
+++ b/packages/ckeditor5-list/src/tododocumentlist/tododocumentlistediting.ts
@@ -152,7 +152,7 @@ export default class TodoDocumentListEditing extends Plugin {
 						{ checked: 'checked' } :
 						null
 					),
-					... ( dataPipeline ?
+					...( dataPipeline ?
 						{ disabled: 'disabled' } :
 						{ tabindex: '-1' }
 					)