diff --git a/wscript b/wscript
index a08e2b5..4e55f15 100644
--- a/wscript
+++ b/wscript
@@ -64,6 +64,7 @@
         source =  [
             'src/ccnx-wrapper.cpp',
             'src/ccnx-pco.cpp',
+            'src/ccnx-closure.cpp',
             'src/ccnx-tunnel.cpp',
             ],
         use = 'BOOST BOOST_THREAD SSL CCNX',