diff --git a/liborcus.spec b/liborcus.spec
index 4ace241..02fac8a 100644
--- a/liborcus.spec
+++ b/liborcus.spec
@@ -12,7 +12,6 @@ Source: http://kohei.us/files/orcus/src/%{name}-%{version}.tar.bz2
 
 # libs
 BuildRequires: boost-devel
-BuildRequires: mdds-devel
 BuildRequires: zlib-devel
 
 %description