diff --git a/libnetfilter_cttimeout.spec b/libnetfilter_cttimeout.spec
index 2508e6b..c106af9 100644
--- a/libnetfilter_cttimeout.spec
+++ b/libnetfilter_cttimeout.spec
@@ -31,6 +31,7 @@ Source2:        ftp://ftp.netfilter.org/pub/libnetfilter_cttimeout/%name-%versio
 Source3:        baselibs.conf
 BuildRoot:      %{_tmppath}/%{name}-%{version}-build
 #git#BuildRequires:  autoconf, automake >= 1.6, libtool
+BuildRequires:  glibc-devel >= 2.9
 BuildRequires:  pkgconfig >= 0.21
 %if 0%{?suse_version} >= 1140 || 0%{?fedora_version}
 BuildRequires:  pkgconfig(libmnl) >= 1.0.0