diff --git a/xmlrpc-c.spec b/xmlrpc-c.spec
index 99fcfae..014f4c6 100644
--- a/xmlrpc-c.spec
+++ b/xmlrpc-c.spec
@@ -17,7 +17,7 @@ URL:		http://xmlrpc-c.sourceforge.net/
 # generated by 'make svn-sources [SVN_VER=%version SVN_REV=%svnrev]'. Unfortunately,
 # upstream does not tag versions so we must fetch from the branch and
 # check which version was used for it
-%{?advanced_branch:Source0:	xmlrpc-c-%version.tar.bz2}
+%{?advanced_branch:Source0:	xmlrpc-c-%version.tar.xz}
 
 Source100:	dfs.cc
 Source101:	dso-fixup