diff --git a/src/back/routes/common/show-first-row/show-first-row.tsx b/src/back/routes/common/show-first-row/show-first-row.tsx
index 688ae18..5c4dbb4 100644
--- a/src/back/routes/common/show-first-row/show-first-row.tsx
+++ b/src/back/routes/common/show-first-row/show-first-row.tsx
@@ -40,7 +40,7 @@ export async function showFirstRow({
 		show_more_button: JSX.Element,
 		show_less_button: JSX.Element
 	) => JSX.Element;
-	classes?: string[];
+	classes?: classNames.ArgumentArray;
 }): Promise<string> {
 	const id = showFirstRowIds.next().value;
 	const checkbox_id = "show-first-row__checkbox--" + id;