diff --git a/samples/htlbox/htlbox.bkl b/samples/htlbox/htlbox.bkl
index 796ad04982..3105bc4d6b 100644
--- a/samples/htlbox/htlbox.bkl
+++ b/samples/htlbox/htlbox.bkl
@@ -5,6 +5,7 @@
 
     <exe id="htlbox" template="wx_sample" template_append="wx_append">
         <sources>htlbox.cpp</sources>
+        <wx-lib>html</wx-lib>
         <wx-lib>core</wx-lib>
         <wx-lib>base</wx-lib>
         <win32-res>htlbox.rc</win32-res>