2 files changed, 2 insertions, 2 deletions
diff --git a/src/libstd/io/fs.rs b/src/libstd/io/fs.rs
index bd334f52628..d5f23694fc8 100644
--- a/src/libstd/io/fs.rs
+++ b/src/libstd/io/fs.rs
@@ -237,7 +237,7 @@ impl File {
     }
 
     /// Queries information about the underlying file.
-    pub fn stat(&mut self) -> IoResult<FileStat> {
+    pub fn stat(&self) -> IoResult<FileStat> {
         self.fd.fstat()
             .update_err("couldn't fstat file", |e|
                 format!("{}; path={}", e, self.path.display()))
diff --git a/src/libstd/sys/windows/fs.rs b/src/libstd/sys/windows/fs.rs
index 9c4ffb926b5..9402c63dcf5 100644
--- a/src/libstd/sys/windows/fs.rs
+++ b/src/libstd/sys/windows/fs.rs
@@ -131,7 +131,7 @@ impl FileDesc {
         return ret;
     }
 
-    pub fn fstat(&mut self) -> IoResult<io::FileStat> {
+    pub fn fstat(&self) -> IoResult<io::FileStat> {
         let mut stat: libc::stat = unsafe { mem::zeroed() };
         match unsafe { libc::fstat(self.fd(), &mut stat) } {
             0 => Ok(mkstat(&stat)),