diff --git a/installation-images.spec b/installation-images.spec
index d63fabc..aa79a38 100644
--- a/installation-images.spec
+++ b/installation-images.spec
@@ -59,6 +59,7 @@ BuildRequires:  caasp-release-DVD
 %define branding_plymouth SLE
 %define branding_grub2    SLE
 %define branding_gfxboot  SLE
+%define config_yast_selfupdate 0
 BuildRequires:  sle12-desktop-migration
 BuildRequires:  sles-release
 BuildRequires:  sles-release-DVD
@@ -493,6 +494,10 @@ export instsys_complain=1
 %if 0%{?config_bootmenu_no_upgrade}
 export BOOTMENU_NO_UPGRADE=1
 %endif
+# force selfupdate setting, if defined
+%if 0%{?config_yast_selfupdate:1}
+export YAST_SELFUPDATE=%{config_yast_selfupdate}
+%endif
 make THEMES=%theme
 %ifarch %ix86 x86_64
 %if %{with xen}