diff --git a/src/lib/components/csvImportBox.svelte b/src/lib/components/csvImportBox.svelte
index 095cb627f..8d232b671 100644
--- a/src/lib/components/csvImportBox.svelte
+++ b/src/lib/components/csvImportBox.svelte
@@ -18,7 +18,7 @@
     import { Link } from '$lib/elements';
 
     type CsvImportError = {
-        [key: string]: unknown;
+        [key: string]: number | string | null;
     };
 
     type ImportItem = {