diff --git a/CCfits.spec b/CCfits.spec
index 8df5f36..c78ad52 100644
--- a/CCfits.spec
+++ b/CCfits.spec
@@ -10,7 +10,7 @@ Source0: http://heasarc.gsfc.nasa.gov/docs/software/fitsio/ccfits/%{name}-%{vers
 Patch0: CCfits-1.6-removerpath.patch
 Buildroot: %{_tmppath}/%{name}-%{version}-%{release}-root-%(%{__id_u} -n)
 
-BuildRequires: cfitsio-devel
+BuildRequires: cfitsio-devel >= 3.020 
 Requires(post): /sbin/ldconfig
 Requires(postun): /sbin/ldconfig
 
@@ -76,7 +76,7 @@ rm -fr %{buildroot}
 
 %changelog
 * Mon Dec 11 2006 Sergio Pascual <spr at astrax.fis.ucm.es> 1.6-1
-- New upstream version 1.6.
+- New upstream version 1.6. Only compiles with cfitsio >= 3.020.
 * Tue Sep 12 2006 Sergio Pascual <spr at astrax.fis.ucm.es> 1.5-3
 - Rebuild for FC6.
 * Fri Jul 28 2006 Sergio Pascual <spr at astrax.fis.ucm.es> 1.5-2