diff --git a/SConstruct b/SConstruct
index 22d3d45..d73c4e8 100644
--- a/SConstruct
+++ b/SConstruct
@@ -256,6 +256,7 @@
                    flimflam_proxy.cc
                    full_update_generator.cc
                    graph_utils.cc
+                   http_common.cc
                    http_fetcher.cc
                    libcurl_http_fetcher.cc
                    marshal.glibmarshal.c