diff --git a/giac.spec b/giac.spec
index bb06382..a67e85c 100644
--- a/giac.spec
+++ b/giac.spec
@@ -1,13 +1,13 @@
 # Architectures currently not supported
 # http://xcas.e.ujf-grenoble.fr/XCAS/viewtopic.php?f=19&t=1723
-ExcludeArch: aarch64 ppc64 ppc64le
+ExcludeArch: aarch64 ppc64 ppc64le s390x
 
 %global subversion 63
 
 Name:          giac
 Summary:       Computer Algebra System, Symbolic calculus, Geometry
 Version:       1.2.2
-Release:       5.%{subversion}%{?dist}
+Release:       6.%{subversion}%{?dist}
 # LGPLv3+: src/Fl_GDI_Printer.cxx, src/Flv_List.cc, src/Flv_Table.cc
 # BSD: src/tinymt32*
 License:       GPLv3+
@@ -58,7 +58,7 @@ GMP (big integers), MPFR (bigfloats) and also
   - Partial Maple and TI compatibility.
   - It has interfaces in texmacs and sagemath.
 
-it consists of:
+It consists of:
    - a C++ library (libgiac)
    - a command line interpreter (icas/giac)
    - an FLTK-based GUI (xcas) with interactive geometry and formal spreadsheets.
@@ -153,7 +153,7 @@ rm -f examples/Exemples/demo/._*
 rm -f examples/Exemples/analyse/._*
 
 %build
-export LDFLAGS="%{__global_ldflags} -Wl,--as-needed -lblas"
+export LDFLAGS="%{__global_ldflags} -Wl,--as-needed"
 %configure --enable-static=no --with-included-gettext=no --enable-nls=yes \
  --enable-tommath=no --enable-debug=no --enable-gc=no --enable-sscl=no \
  --enable-dl=yes --enable-gsl=yes --enable-lapack=yes --enable-pari=yes \
@@ -400,8 +400,11 @@ make -C check check
 %{_datadir}/giac/examples/
 
 %changelog
+* Thu Jul 07 2016 Antonio Trande <sagitterATfedoraproject.org>  1.2.2-6.63
+- Exclude s390x
+
 * Sat Jul 02 2016 Antonio Trande <sagitterATfedoraproject.org>  1.2.2-5.63
-- Fix directories owning
+- Fix directories ownership
 - Exclude PPC and aarch64
 
 * Thu Jun 30 2016 Antonio Trande <sagitterATfedoraproject.org>  1.2.2-4.63