diff --git a/libreoffice.spec b/libreoffice.spec
index efa61ae..5a8eecd 100644
--- a/libreoffice.spec
+++ b/libreoffice.spec
@@ -4,6 +4,9 @@
 %define _default_patch_flags -s -l
 # undef to get english only and no-langpacks for a faster smoketest build
 %define langpacks 1
+# make it easier to download sources from pre-release site
+# http://dev-builds.libreoffice.org/pre-releases/src
+%define source_url http://download.documentfoundation.org/libreoffice/src
 
 %if %{langpacks}
 %define langpack_langs en-US af ar as bg bn ca cs cy da de dz el es et eu fi fr ga gl gu he hi hr hu it ja ko kn lt mai ml mr nb nl nn nr nso or pa-IN pl pt pt-BR ro ru sh si sk sl sr ss st sv ta te th tn tr ts uk ve xh zh-CN zh-TW zu
@@ -20,26 +23,26 @@ License:        LGPLv3 and LGPLv2+ and BSD and (MPLv1.1 or GPLv2 or LGPLv2 or Ne
 Group:          Applications/Productivity
 URL:            http://www.documentfoundation.org/develop
 BuildRoot:      %{_tmppath}/%{name}-%{version}-%{release}-root-%(%{__id_u} -n)
-Source0:        http://download.documentfoundation.org/libreoffice/src/libreoffice-artwork-%{version}.tar.bz2
-Source1:        http://download.documentfoundation.org/libreoffice/src/libreoffice-base-%{version}.tar.bz2
-Source2:        http://download.documentfoundation.org/libreoffice/src/libreoffice-bootstrap-%{version}.tar.bz2
-Source3:        http://download.documentfoundation.org/libreoffice/src/libreoffice-calc-%{version}.tar.bz2
-Source4:        http://download.documentfoundation.org/libreoffice/src/libreoffice-components-%{version}.tar.bz2
-Source5:        http://download.documentfoundation.org/libreoffice/src/libreoffice-extensions-%{version}.tar.bz2
-Source6:        http://download.documentfoundation.org/libreoffice/src/libreoffice-extras-%{version}.tar.bz2
-Source7:        http://download.documentfoundation.org/libreoffice/src/libreoffice-filters-%{version}.tar.bz2
-Source8:        http://download.documentfoundation.org/libreoffice/src/libreoffice-help-%{version}.tar.bz2
-Source9:        http://download.documentfoundation.org/libreoffice/src/libreoffice-impress-%{version}.tar.bz2
-Source10:       http://download.documentfoundation.org/libreoffice/src/libreoffice-libs-core-%{version}.tar.bz2
-Source11:       http://download.documentfoundation.org/libreoffice/src/libreoffice-libs-extern-%{version}.tar.bz2
-Source12:       http://download.documentfoundation.org/libreoffice/src/libreoffice-libs-extern-sys-%{version}.tar.bz2
-Source13:       http://download.documentfoundation.org/libreoffice/src/libreoffice-libs-gui-%{version}.tar.bz2
-Source14:       http://download.documentfoundation.org/libreoffice/src/libreoffice-postprocess-%{version}.tar.bz2
-Source15:       http://download.documentfoundation.org/libreoffice/src/libreoffice-sdk-%{version}.tar.bz2
-Source16:       http://download.documentfoundation.org/libreoffice/src/libreoffice-testing-%{version}.tar.bz2
-Source17:       http://download.documentfoundation.org/libreoffice/src/libreoffice-ure-%{version}.tar.bz2
-Source18:       http://download.documentfoundation.org/libreoffice/src/libreoffice-writer-%{version}.tar.bz2
-Source19:       http://download.documentfoundation.org/libreoffice/src/libreoffice-translations-%{version}.tar.bz2
+Source0:        /libreoffice-artwork-%{version}.tar.bz2
+Source1:        %{source_url}/libreoffice-base-%{version}.tar.bz2
+Source2:        %{source_url}/libreoffice-bootstrap-%{version}.tar.bz2
+Source3:        %{source_url}/libreoffice-calc-%{version}.tar.bz2
+Source4:        %{source_url}/libreoffice-components-%{version}.tar.bz2
+Source5:        %{source_url}/libreoffice-extensions-%{version}.tar.bz2
+Source6:        %{source_url}/libreoffice-extras-%{version}.tar.bz2
+Source7:        %{source_url}/libreoffice-filters-%{version}.tar.bz2
+Source8:        %{source_url}/libreoffice-help-%{version}.tar.bz2
+Source9:        %{source_url}/libreoffice-impress-%{version}.tar.bz2
+Source10:       %{source_url}/libreoffice-libs-core-%{version}.tar.bz2
+Source11:       %{source_url}/libreoffice-libs-extern-%{version}.tar.bz2
+Source12:       %{source_url}/libreoffice-libs-extern-sys-%{version}.tar.bz2
+Source13:       %{source_url}/libreoffice-libs-gui-%{version}.tar.bz2
+Source14:       %{source_url}/libreoffice-postprocess-%{version}.tar.bz2
+Source15:       %{source_url}/libreoffice-sdk-%{version}.tar.bz2
+Source16:       %{source_url}/libreoffice-testing-%{version}.tar.bz2
+Source17:       %{source_url}/libreoffice-ure-%{version}.tar.bz2
+Source18:       %{source_url}/libreoffice-writer-%{version}.tar.bz2
+Source19:       %{source_url}/libreoffice-translations-%{version}.tar.bz2
 Source20:       http://download.go-oo.org/extern/185d60944ea767075d27247c3162b3bc-unowinreg.dll
 Source21:       redhat-langpacks.tar.gz
 Source22:       libreoffice-multiliblauncher.sh