diff --git a/libXres.spec b/libXres.spec
index 4ef0d80..9eba051 100644
--- a/libXres.spec
+++ b/libXres.spec
@@ -9,7 +9,7 @@ BuildRoot: %{_tmppath}/%{name}-%{version}-%{release}-root-%(%{__id_u} -n)
 
 Source0: ftp://ftp.x.org/pub/individual/lib/%{name}-%{version}.tar.bz2
 
-#BuildRequires: pkgconfig
+BuildRequires: pkgconfig
 BuildRequires: libX11-devel
 BuildRequires: libXext-devel