diff --git a/gnu-smalltalk.spec b/gnu-smalltalk.spec
index 431d7f0..477eb20 100644
--- a/gnu-smalltalk.spec
+++ b/gnu-smalltalk.spec
@@ -1,7 +1,7 @@
 Summary: GNU Smalltalk
 Name: gnu-smalltalk
 Version: 2.3
-Release: 3%{?dist}
+Release: 4%{?dist}
 # Source: smalltalk-2.2b.tar.gz
 Source: ftp://ftp.gnu.org/gnu/smalltalk/smalltalk-%{version}.tar.gz
 Patch1: gst-2.3-am.patch
@@ -11,6 +11,8 @@ Group: Development/Languages
 URL: http://www.gnu.org/software/smalltalk/smalltalk.html
 Buildroot: %{_tmppath}/%{name}-%{version}-root-%(%{__id_u} -n)
 
+ExcludeArch: x86_64
+
 Requires(post): /sbin/install-info
 Requires(preun): /sbin/install-info
 
@@ -144,6 +146,9 @@ fi
 %{_datadir}/emacs/site-lisp/*
 
 %changelog
+* Thu Dec  7 2006 Jochen Schmitt <Jochen herr-schmitt de> 2.3-4
+- Exclude x86_64 bc/ build failure
+
 * Thu Dec  7 2006 Jochen Schmitt <Jochen herr-schmitt de> 2.3-3
 - Fix wrong lib option in gst-config