diff --git a/arch/sim/src/sim/sim_checkhostfstypes.c b/arch/sim/src/sim/sim_checkhostfstypes.c
index 49145ab34643b..3206dfcd912aa 100644
--- a/arch/sim/src/sim/sim_checkhostfstypes.c
+++ b/arch/sim/src/sim/sim_checkhostfstypes.c
@@ -63,6 +63,7 @@
 /* dirent */
 
 STATIC_ASSERT_FILED(nuttx_dirent_s, dirent, d_type);
+STATIC_ASSERT_FILED(nuttx_dirent_s, dirent, d_ino);
 STATIC_ASSERT_FILED(nuttx_dirent_s, dirent, d_name);
 
 STATIC_ASSERT(sizeof(struct nuttx_dirent_s) == sizeof(struct dirent));
diff --git a/fs/vfs/fs_dir.c b/fs/vfs/fs_dir.c
index fc78f619feb39..f3a15a9e63edb 100644
--- a/fs/vfs/fs_dir.c
+++ b/fs/vfs/fs_dir.c
@@ -464,6 +464,7 @@ static ssize_t dir_read(FAR struct file *filep, FAR char *buffer,
 #ifndef CONFIG_DISABLE_MOUNTPOINT
   FAR struct inode *inode = dir->fd_root;
 #endif
+  FAR struct dirent *dirent = (FAR struct dirent *)buffer;
   int ret;
 
   /* Verify that we were provided with a valid directory structure */
@@ -480,15 +481,14 @@ static ssize_t dir_read(FAR struct file *filep, FAR char *buffer,
 #ifndef CONFIG_DISABLE_MOUNTPOINT
   if (INODE_IS_MOUNTPT(inode))
     {
-      ret = inode->u.i_mops->readdir(inode, dir,
-                                     (FAR struct dirent *)buffer);
+      ret = inode->u.i_mops->readdir(inode, dir, dirent);
     }
   else
 #endif
     {
       /* The node is part of the root pseudo file system */
 
-      ret = read_pseudodir(dir, (FAR struct dirent *)buffer);
+      ret = read_pseudodir(dir, dirent);
     }
 
   /* ret < 0 is an error. Special case: ret = -ENOENT is end of file */
@@ -503,6 +503,9 @@ static ssize_t dir_read(FAR struct file *filep, FAR char *buffer,
       return ret;
     }
 
+  /* REVISIT: Should we use i_ino for the d_ino field? */
+
+  dirent->d_ino = dir->fd_root->i_ino;
   filep->f_pos++;
   return sizeof(struct dirent);
 }
diff --git a/include/dirent.h b/include/dirent.h
index 2d9a478aef818..aa8e0cc2aaeed 100644
--- a/include/dirent.h
+++ b/include/dirent.h
@@ -111,6 +111,7 @@
 struct dirent
 {
   uint8_t  d_type;                /* Type of file */
+  ino_t    d_ino;                 /* File serial number, not implemented */
   char     d_name[NAME_MAX + 1];  /* File name */
 };
 
diff --git a/include/nuttx/fs/hostfs.h b/include/nuttx/fs/hostfs.h
index 9d7d045bcfe88..f06e3e1a6d55d 100644
--- a/include/nuttx/fs/hostfs.h
+++ b/include/nuttx/fs/hostfs.h
@@ -151,6 +151,7 @@ struct nuttx_timespec
 struct nuttx_dirent_s
 {
   uint8_t      d_type;                      /* type of file */
+  nuttx_ino_t  d_ino;                       /* inode number */
   char         d_name[CONFIG_NAME_MAX + 1]; /* filename */
 };