diff --git a/ext/fs/std_fs.rs b/ext/fs/std_fs.rs
index fb48616564..427e3826a0 100644
--- a/ext/fs/std_fs.rs
+++ b/ext/fs/std_fs.rs
@@ -829,7 +829,7 @@ fn stat_extra(
     use winapi::um::minwinbase::FileBasicInfo;
     use winapi::um::winbase::GetFileInformationByHandleEx;
 
-    let mut file_info = {
+    let file_info = {
       let mut file_info = std::mem::MaybeUninit::<FILE_BASIC_INFO>::zeroed();
       if GetFileInformationByHandleEx(
         handle,