diff --git a/src/fs/syscalls/at/statx.rs b/src/fs/syscalls/at/statx.rs
index ed736ee..fb244f5 100644
--- a/src/fs/syscalls/at/statx.rs
+++ b/src/fs/syscalls/at/statx.rs
@@ -70,13 +70,13 @@ pub struct StatX {
     pub stx_btime: StatXTimestamp, // Creation time
     pub stx_ctime: StatXTimestamp, // Change time
     pub stx_mtime: StatXTimestamp, // Modification time
+    pub stx_mnt_id: u64,                    // Mount ID
 
     // Currently not supported on any current filesystems
     pub stx_rdev_major: u32,                // Device major ID
     pub stx_rdev_minor: u32,                // Device minor ID
     pub stx_dev_major: u32,                 // Filesystem major ID
     pub stx_dev_minor: u32,                 // Filesystem minor ID
-    pub stx_mnt_id: u64,                    // Mount ID
     pub stx_dio_mem_align: u32,             // Alignment of memory for direct I/O
     pub stx_dio_offset_align: u32,          // Alignment of offset for direct I/O
     pub stx_subvol: u64,                    // Subvolume ID
@@ -199,6 +199,11 @@ pub async fn sys_statx(
         stat_x.stx_btime = attr.btime.into();
     }
 
+    if mask.contains(StatXMask::STATX_MNT_ID) {
+        stat_x.stx_mask |= StatXMask::STATX_MNT_ID.bits();
+        stat_x.stx_mnt_id = attr.id.fs_id();
+    }
+
     stat_x.stx_attributes_mask = StatXAttr::STATX_ATTR_MOUNT_ROOT.bits();
     if VFS.is_mount_root(attr.id) {
         stat_x.stx_attributes |= StatXAttr::STATX_ATTR_MOUNT_ROOT.bits();