diff --git a/mutter.spec b/mutter.spec
index a58f0ac..bc5d7f0 100644
--- a/mutter.spec
+++ b/mutter.spec
@@ -9,6 +9,7 @@
 %global libei_version 1.0.901
 %global mutter_api_version 15
 
+%global major_version %%(echo %{version} | cut -d '.' -f1 | cut -d '~' -f 1)
 %global tarball_version %%(echo %{version} | tr '~' '.')
 
 Name:          mutter
@@ -18,7 +19,7 @@ Summary:       Window and compositing manager based on Clutter
 
 License:       GPLv2+
 URL:           http://www.gnome.org
-Source0:       http://download.gnome.org/sources/%{name}/47/%{name}-%{tarball_version}.tar.xz
+Source0:       http://download.gnome.org/sources/%{name}/%{major_version}/%{name}-%{tarball_version}.tar.xz
 
 # Work-around for OpenJDK's compliance test
 Patch:         0001-window-actor-Special-case-shaped-Java-windows.patch