diff --git a/coan.spec b/coan.spec
index 698c723..8def865 100644
--- a/coan.spec
+++ b/coan.spec
@@ -1,6 +1,6 @@
 Name:		coan
 Version:	6.0.1
-Release:	10%{?dist}
+Release:	11%{?dist}
 Summary:	A command line tool for simplifying the pre-processor conditionals in source code
 Group:		Development/Languages
 License:	BSD
@@ -16,6 +16,14 @@ BuildRequires:  perl-podlators
 BuildRequires:  perl-Pod-Html
 %endif
 
+# Regression on other arches with F26 mass rebuild (big endian systems)
+# Temporarily exclude them
+# https://bugzilla.redhat.com/show_bug.cgi?id=1423293
+# checking for big-endian host... yes
+# RPM build errors:
+# configure: error: Sorry. Coan is buggy on big-endian systems
+ExcludeArch:	ppc64 s390x
+
 
 %description
 %{name} (formerly sunifdef) is a software engineering tool for analyzing
@@ -59,6 +67,9 @@ make install DESTDIR=$RPM_BUILD_ROOT INSTALL="install -p"
 %{_mandir}/man1/%{name}.1.*
 
 %changelog
+* Sat Jun 17 2017 Filipe Rosset <rosset.filipe@gmail.com> - 6.0.1-11
+- ExcludeArch ppc64 and s390x due FTBFS, fixes rhbz #1423293
+
 * Mon May 15 2017 Fedora Release Engineering <rel-eng@lists.fedoraproject.org> - 6.0.1-10
 - Rebuilt for https://fedoraproject.org/wiki/Fedora_26_27_Mass_Rebuild