diff --git a/library/std/src/sys/unix/fs.rs b/library/std/src/sys/unix/fs.rs
index 764e1f257901d..5ed2bdd7fe32b 100644
--- a/library/std/src/sys/unix/fs.rs
+++ b/library/std/src/sys/unix/fs.rs
@@ -1391,6 +1391,7 @@ impl FromInner<FileDesc> for File {
 }
 
 impl AsFd for File {
+    #[inline]
     fn as_fd(&self) -> BorrowedFd<'_> {
         self.0.as_fd()
     }