diff -up kbd-1.15.5/data/keymaps/i386/qwertz/sg.map.orig kbd-1.15.5/data/keymaps/i386/qwertz/sg.map

--- kbd-1.15.5/data/keymaps/i386/qwertz/sg.map.orig	2013-02-21 15:54:39.362799094 +0100

+++ kbd-1.15.5/data/keymaps/i386/qwertz/sg.map	2013-02-21 15:54:46.448838554 +0100

@@ -1,7 +1,7 @@

 keymaps 0-2,4-6,8,12

 include "qwertz-layout"

 include "linux-with-alt-and-altgr.inc"

-	plain keycode  83 = KP_Comma

+	plain keycode  83 = KP_Period

 strings as usual

 keycode   1 = Escape           Escape