diff --git a/config b/config
index b158d3e7c..8af8606f7 100644
--- a/config
+++ b/config
@@ -170,9 +170,6 @@ if [ $ngx_found = yes ]; then
     $ps_src/pthread_shared_mem.cc \
     $ps_src/ngx_request_context.cc \
     $ps_src/log_message_handler.cc \
-    $mod_pagespeed_dir/net/instaweb/system/add_headers_fetcher.cc \
-    $mod_pagespeed_dir/net/instaweb/system/loopback_route_fetcher.cc \
-    $mod_pagespeed_dir/net/instaweb/system/serf_url_async_fetcher.cc"
   # Make pagespeed run immediately before gzip.
   HTTP_FILTER_MODULES=$(echo $HTTP_FILTER_MODULES |\
     sed "s/$HTTP_GZIP_FILTER_MODULE/$HTTP_GZIP_FILTER_MODULE $ngx_addon_name/")