diff --git a/src/components/ImportSpreadsheet.tsx b/src/components/ImportSpreadsheet.tsx
index 60b498b3a23..6eb67a400c5 100644
--- a/src/components/ImportSpreadsheet.tsx
+++ b/src/components/ImportSpreadsheet.tsx
@@ -65,7 +65,9 @@ function ImportSpreadsheet({backTo, goTo, isImportingMultiLevelTags}: ImportSpre
 
     const validateFile = (file: FileObject) => {
         const {fileExtension} = splitExtensionFromFileName(file?.name ?? '');
-        if (!CONST.ALLOWED_SPREADSHEET_EXTENSIONS.includes(fileExtension.toLowerCase() as TupleToUnion<typeof CONST.ALLOWED_SPREADSHEET_EXTENSIONS>)) {
+        const allowedExtensions: readonly string[] = isImportingMultiLevelTags ? CONST.MULTILEVEL_TAG_ALLOWED_SPREADSHEET_EXTENSIONS : CONST.ALLOWED_SPREADSHEET_EXTENSIONS;
+
+        if (!allowedExtensions.includes(fileExtension.toLowerCase())) {
             setUploadFileError(true, 'attachmentPicker.wrongFileType', 'attachmentPicker.notAllowedExtension');
             return false;
         }