diff --git a/conf/04-rpmbuild-format-unpackaged-filelist.conf b/conf/04-rpmbuild-format-unpackaged-filelist.conf
index a1801d2..6518292 100644
--- a/conf/04-rpmbuild-format-unpackaged-filelist.conf
+++ b/conf/04-rpmbuild-format-unpackaged-filelist.conf
@@ -1,22 +1,18 @@
 ## unpackaged file list conversion --------------------------------------------
 
-format_unpackaged_file_list="\
-# translations for python packages
-s,^/usr/lib/python2.6/site-packages,%{python_sitearch},
+format_unpackaged_file_list_common="\
+# python
+s,^/usr/include/python3.3m,%{python3_inc},
 # generic translations
 s,^/usr/bin,%{_bindir},
 s,^/usr/sbin,%{_sbindir},
-s,^/usr/libexec,%{_libexecdir},
-s,^/usr/lib,%{_libdir},
 s,^/usr/share/info,%{_infodir},
 s,^/usr/share/man,%{_mandir},
 s,^/usr/share,%{_datadir},
 s,^/usr/include,%{_includedir},
 s,^/etc,%{_sysconfdir},
-s,^/lib,/%{_lib},
-s,^/lib64,/%{_lib},
 s,^/var,%{_localstatedir},
-# translations for kde4 packages
+# kde4
 s,^/etc/opt/kde,%{_kde4_sysconfdir},
 s,^/opt/kde/bin,%{_kde4_bindir},
 s,^/opt/kde/sbin,%{_kde4_sbindir},
@@ -45,3 +41,31 @@ s,^/opt/kde/share/sounds,%{_kde4_soundsdir},
 s,^/opt/kde/share/templates,%{_kde4_templatesdir},
 s,^/opt/kde/share/wallpapers,%{_kde4_wallpaperdir},
 s,^/opt/kde/share,%{_kde4_sharedir},"
+
+## lines which are (target) architecture specific
+
+### i586
+format_unpackaged_file_list_i586="\
+# python
+s,^/usr/lib/python2.7/site-packages,%{python27_sitearch},
+s,^/usr/lib/python3.3/site-packages,%{python3_sitearch},
+# libraries
+s,^/usr/libexec,%{_libexecdir},
+s,^/usr/lib,%{_libdir},
+s,^/lib,/%{_lib},"
+
+### arm
+format_unpackaged_file_list_arm="$format_unpackaged_file_list_i586"
+
+### x86_64
+format_unpackaged_file_list_x86_64="\
+# python
+s,^/usr/lib64/python2.7/site-packages,%{python27_sitearch},
+s,^/usr/lib/python2.7/site-packages,%{python27_sitelib},
+s,^/usr/lib64/python3.3/site-packages,%{python3_sitearch},
+# libraries
+s,^/usr/libexec64,%{_libexecdir},
+s,^/usr/libexec,%{_prefix}/libexec,
+s,^/usr/lib64,%{_libdir},
+s,^/usr/lib,%{_prefix}/lib,
+s,^/lib64,/%{_lib},"
diff --git a/plugins/pck-update.in b/plugins/pck-update.in
index 48cfd6f..5ea814d 100644
--- a/plugins/pck-update.in
+++ b/plugins/pck-update.in
@@ -1,6 +1,6 @@
 #!/bin/bash
 # pck-update -- plugin for @package@
-# Copyright (C) 2004-2013 Davide Madrisan <davide.madrisan@gmail.com>
+# Copyright (C) 2004-2014 Davide Madrisan <davide.madrisan@gmail.com>
 
 [ -z "$BASH" ] || [ ${BASH_VERSION:0:1} -lt 3 ] &&
  { echo $"this script requires bash version 3 or better" >&2 && exit 1; }
@@ -2163,6 +2163,12 @@ It seems good but do not forget to run quality and security tests"\
             notify.debug "tmpunpackfiles = \`${NOTE}$tmpunpackfiles${NORM}'"
 
             local skipline=1
+            local format_unpackaged_file_list_arch="\
+format_unpackaged_file_list_${target_cpu}"
+            [ -n "${!format_unpackaged_file_list_arch}" ] ||
+               notify.warning \
+                  $"no arch-specific pattern translations for unpackaged files"
+
             while read line; do
                case "$line" in
                "error: Installed (but unpackaged) file(s) found:")
@@ -2172,7 +2178,8 @@ It seems good but do not forget to run quality and security tests"\
                [ "$skipline" = 1 ] || echo "$line"
             done < <(LC_ALL=C eval rpmbuild -bl $rpmbuild_opts --nodeps --nobuild \
                $SRPM_SPECFILE_WITH_PATH $USER_RPMDEFINE_OPTS 2>&1) | \
-               sed -e "$format_unpackaged_file_list" \
+               sed -e "$format_unpackaged_file_list_common;\
+${!format_unpackaged_file_list_arch}" \
                   > $tmpunpackfiles
 
             if [ -s "$tmpunpackfiles" ]; then
diff --git a/po/it/autospec.po b/po/it/autospec.po
index 8914005..7667ff3 100644
--- a/po/it/autospec.po
+++ b/po/it/autospec.po
@@ -740,6 +740,9 @@ msgid   "It seems good but do not forget to run quality and security tests"
 msgstr  "Sembra ok ma non dimenticare di eseguire i test di qualità e "
         "sicurezza"
 
+msgid   "no arch-specific pattern translations for unpackaged files"
+msgstr  "nessuna corrispondenza di pattern legati all'architettura per i file non pacchetizzati"
+
 msgid   "Add the following files in the right %files blocks"
 msgstr  "Smistare i seguenti file nelle sezioni %files corrispondenti"