diff --git a/proj.spec b/proj.spec
index d5966c1..a56a4b5 100644
--- a/proj.spec
+++ b/proj.spec
@@ -28,7 +28,11 @@ Source0:        proj-%{version}.tar.bz2
 Source1:        proj-datumgrid-1.5.zip
 BuildRequires:  bzip2
 BuildRequires:  unzip
+%if 0%{?centos_version} || 0%{?rhel_version}
+BuildRequires:  pkgconfig
+%else
 BuildRequires:  pkg-config
+%endif
 Provides:       libproj = %{version}
 BuildRoot:      %{_tmppath}/%{name}-%{version}-build
 Prefix:         %{_prefix}