diff --git a/src/libstd/sys/windows/fs.rs b/src/libstd/sys/windows/fs.rs
index 204f6af5fc1a0..4160123c9a2ab 100644
--- a/src/libstd/sys/windows/fs.rs
+++ b/src/libstd/sys/windows/fs.rs
@@ -412,7 +412,7 @@ impl File {
 
     pub fn duplicate(&self) -> io::Result<File> {
         Ok(File {
-            handle: self.handle.duplicate(0, true, c::DUPLICATE_SAME_ACCESS)?,
+            handle: self.handle.duplicate(0, false, c::DUPLICATE_SAME_ACCESS)?,
         })
     }