diff --git a/liborcus.spec b/liborcus.spec
index 502db68..3a3cc5b 100644
--- a/liborcus.spec
+++ b/liborcus.spec
@@ -13,6 +13,7 @@ BuildRequires: boost-devel
 BuildRequires: mdds-devel
 BuildRequires: zlib-devel
 
+# upstreamed as <https://gitorious.org/orcus/orcus/merge_requests/2#f60d6eecee72349993a392a9a63ddf3383d3b8c8-f60d6eecee72349993a392a9a63ddf3383d3b8c8@2>:
 Patch1: boost-include.patch
 
 %description