diff --git a/docs/busybox.net/footer.html b/docs/busybox.net/footer.html
index 31f8ca7..e8a3272 100644
--- a/docs/busybox.net/footer.html
+++ b/docs/busybox.net/footer.html
@@ -31,6 +31,11 @@
 		src="images/osuosl.png"
 		alt="This site is kindly hosted by OSL"></a>
 	    </td>
+	    <td>
+		<a href="http://validator.w3.org/check?uri=referer"><img
+		src="images/valid-html401.png"
+		alt="Valid HTML" height="31" width="88"></a>
+	    </td>
 
 	</TR>
     </table>
diff --git a/docs/busybox.net/images/valid-html401.png b/docs/busybox.net/images/valid-html401.png
new file mode 100644
index 0000000..ec9bc0c
--- /dev/null
+++ b/docs/busybox.net/images/valid-html401.png
Binary files differ