diff --git a/tests/end_to_end.rs b/tests/end_to_end.rs
index ee342382..fc2059c1 100644
--- a/tests/end_to_end.rs
+++ b/tests/end_to_end.rs
@@ -2,6 +2,7 @@ use std::collections::HashSet;
 use std::io::prelude::*;
 use std::io::Cursor;
 use zip::result::ZipResult;
+use zip::unstable::LittleEndianWriteExt;
 use zip::write::ExtendedFileOptions;
 use zip::write::FileOptions;
 use zip::write::SimpleFileOptions;
@@ -158,8 +159,8 @@ fn check_test_archive<R: Read + Seek>(zip_file: R) -> ZipResult<zip::ZipArchive<
     {
         let file_with_extra_data = archive.by_name("test_with_extra_data/🐢.txt")?;
         let mut extra_data = Vec::new();
-        extra_data.write_u16(0xbeef)?;
-        extra_data.write_u16(EXTRA_DATA.len() as u16)?;
+        extra_data.write_u16_le(0xbeef)?;
+        extra_data.write_u16_le(EXTRA_DATA.len() as u16)?;
         extra_data.write_all(EXTRA_DATA)?;
         assert_eq!(
             file_with_extra_data.extra_data(),