1 files changed, 1 insertions, 1 deletions
diff --git a/library/std/src/sys/unsupported/fs.rs b/library/std/src/sys/unsupported/fs.rs
index cee7295a43a..d1d2847cd33 100644
--- a/library/std/src/sys/unsupported/fs.rs
+++ b/library/std/src/sys/unsupported/fs.rs
@@ -206,7 +206,7 @@ impl File {
         self.0
     }
 
-    pub fn read_buf(&self, buf: &mut ReadBuf<'_>) -> io::Result<()> {
+    pub fn read_buf(&self, _buf: &mut ReadBuf<'_>) -> io::Result<()> {
         self.0
     }