diff --git a/src/DataTable/DataTable.svelte b/src/DataTable/DataTable.svelte
index a10a4dc3..d2dabdd7 100644
--- a/src/DataTable/DataTable.svelte
+++ b/src/DataTable/DataTable.svelte
@@ -136,7 +136,7 @@
   const headerItems = writable([]);
   const thKeys = derived(headerItems, () =>
     headers
-      .map(({ key }, i) => ({ key, id: $headerItems[i] }))
+      .map(({ key }, i) => ({ key, id: key }))
       .reduce((a, c) => ({ ...a, [c.key]: c.id }), {})
   );
   const resolvePath = (object, path) =>