diff --git a/lib/std/os/linux.zig b/lib/std/os/linux.zig
index 2df4fdf75d80e01ca25cb6bb6ea94664709a0a8c..458d3195ac2f0d383b92867373824ec016e1e6e7 100644
--- a/lib/std/os/linux.zig
+++ b/lib/std/os/linux.zig
@@ -1746,11 +1746,12 @@ pub fn close(fd: fd_t) usize {
 }
 
 pub const CLOSE_RANGE = packed struct(u32) {
+    _0: u1 = 0,
     /// Unshare the file descriptor table before closing file descriptors.
     UNSHARE: bool, // 0x00000001
     /// Set the FD_CLOEXEC bit instead of closing the file descriptor.
     CLOEXEC: bool, // 0x00000002
-    _: u30 = 0,
+    _: u29 = 0,
 };
 
 pub fn close_range(first: fd_t, last: fd_t, flags: CLOSE_RANGE) usize {