diff --git a/mysql.spec b/mysql.spec
index 7c4a76d..bbf3d77 100644
--- a/mysql.spec
+++ b/mysql.spec
@@ -131,6 +131,10 @@ CFLAGS="$CFLAGS -fno-strict-aliasing -fwrapv"
 # -ECL 2002-12-19
 CFLAGS="$CFLAGS -fPIC"
 %endif
+# Temporary workaround for gcc bug (bz #193912)
+%ifarch s390x
+CFLAGS="$CFLAGS -mtune=z900"
+%endif
 CXXFLAGS="$CFLAGS -fno-rtti -fno-exceptions"
 export CFLAGS CXXFLAGS
 
@@ -410,8 +414,9 @@ fi
 %attr(-,mysql,mysql) %{_datadir}/mysql-test
 
 %changelog
-* Thu Jun  1 2006 Tom Lane <tgl@redhat.com> 5.0.22-1
+* Thu Jun  8 2006 Tom Lane <tgl@redhat.com> 5.0.22-1
 - Update to MySQL 5.0.22 (fixes CVE-2006-2753)
+- Install temporary workaround for gcc bug on s390x (bz #193912)
 
 * Tue May  2 2006 Tom Lane <tgl@redhat.com> 5.0.21-2
 - Fix bogus perl Requires for mysql-test