diff --git a/source/chapter1/4first-instruction-in-kernel2.rst b/source/chapter1/4first-instruction-in-kernel2.rst
index 3e43cc68222a25a111687a1b02f6eb954a9870a4..1efc67ef727be4b59009917cea013a1b5e6c943f 100644
--- a/source/chapter1/4first-instruction-in-kernel2.rst
+++ b/source/chapter1/4first-instruction-in-kernel2.rst
@@ -38,7 +38,7 @@
     #![no_std]
     #![no_main]
 
-    mod lang_item;
+    mod lang_items;
 
     use core::arch::global_asm;
     global_asm!(include_str!("entry.asm"));