diff --git a/fs/smartfs/smartfs_smart.c b/fs/smartfs/smartfs_smart.c
index 2317f967cd5..3af3a6341fe 100644
--- a/fs/smartfs/smartfs_smart.c
+++ b/fs/smartfs/smartfs_smart.c
@@ -796,6 +796,28 @@ static ssize_t smartfs_write(FAR struct file *filep, FAR const char *buffer,
         }
     }
 
+#ifdef CONFIG_SMARTFS_USE_SECTOR_BUFFER
+
+  /* If data is written to a forward position using seek, the sector
+   * buffer must be updated because it may be referenced later.
+   */
+
+  if (byteswritten > 0)
+    {
+      readwrite.logsector = sf->currsector;
+      readwrite.offset = 0;
+      readwrite.count = fs->fs_llformat.availbytes;
+      readwrite.buffer = (FAR uint8_t *)sf->buffer;
+      ret = FS_IOCTL(fs, BIOC_READSECT, (unsigned long)&readwrite);
+      if (ret < 0)
+        {
+          ferr("ERROR: Error %d reading sector %d\n", ret, sf->currsector);
+          goto errout_with_lock;
+        }
+    }
+
+#endif /* CONFIG_SMARTFS_USE_SECTOR_BUFFER */
+
   /* Now append data to end of the file. */
 
   while (buflen > 0)