diff --git a/evolution-data-server.spec b/evolution-data-server.spec
index 6f8caa0..2e7b832 100644
--- a/evolution-data-server.spec
+++ b/evolution-data-server.spec
@@ -56,6 +56,7 @@ Requires: gnome-vfs2
 Requires: GConf2
 Requires: libglade2
 BuildRequires: bison
+BuildRequires: flex
 BuildRequires: gettext
 BuildRequires: intltool
 BuildRequires: libtool
@@ -206,7 +207,7 @@ autoconf
   --enable-file-locking=fcntl --enable-dot-locking=no \
   %ldap_flags %krb5_flags %nntp_flags %ssl_flags %imap4_flags
 export tagname=CC
-make LIBTOOL=/usr/bin/libtool CFLAGS="$CFLAGS -Werror-implicit-function-declaration"
+make %{?_smp_mflags} LIBTOOL=/usr/bin/libtool CFLAGS="$CFLAGS -Werror-implicit-function-declaration"
 
 %install
 rm -rf $RPM_BUILD_ROOT
@@ -324,7 +325,7 @@ rm -rf $RPM_BUILD_ROOT
 
 %changelog
 * Thu Jun  8 2006 Jeremy Katz <katzj@redhat.com> - 1.7.2-3
-- don't do parallel build
+- BR flex
 
 * Sat May 27 2006 Matthew Barnes <mbarnes@redhat.com> - 1.7.2-2
 - Add missing BuildRequires for gettext (#193360).