diff --git a/libXcomposite.changes b/libXcomposite.changes
index 61dba6b..ecdcf35 100644
--- a/libXcomposite.changes
+++ b/libXcomposite.changes
@@ -1,3 +1,8 @@
+-------------------------------------------------------------------
+Sat Feb 11 21:49:54 UTC 2012 - jengelh@medozas.de
+
+- Provide package descriptions and update URL
+
 -------------------------------------------------------------------
 Tue Feb  7 22:17:49 UTC 2012 - jengelh@medozas.de
 
diff --git a/libXcomposite.spec b/libXcomposite.spec
index cc75512..85c01f9 100644
--- a/libXcomposite.spec
+++ b/libXcomposite.spec
@@ -21,10 +21,12 @@ Release:        0
 Summary:	X11 protocol Composite extension client library
 License:        MIT
 Group:          Development/Libraries/C and C++
-Url:            http://cgit.freedesktop.org/xorg/lib/libXcomposite/
+URL:            http://wiki.freedesktop.org/wiki/Software/CompositeExt
 
 #Git-Clone:	git://anongit.freedesktop.org/xorg/lib/libXcomposite
+#Git-Web:	http://cgit.freedesktop.org/xorg/lib/libXcomposite/
 Source:         %name-%version.tar.bz2
+BuildRoot:	%_tmppath/%name-%version-build
 #git#BuildRequires:	autoconf >= 2.60, automake, libtool
 BuildRequires:	fdupes
 BuildRequires:  pkgconfig, pkgconfig(xorg-macros) >= 1.8
@@ -32,14 +34,22 @@ BuildRequires:	pkgconfig(compositeproto) >= 0.4, pkgconfig(x11)
 BuildRequires:	pkgconfig(xfixes)
 
 %description
-(Upstream has not provided a description)
+The Composite extension causes a entire sub-tree of the window
+hierarchy to be rendered to an off-screen buffer. Applications can
+then take the contents of that buffer and do whatever they like. The
+off-screen buffer can be automatically merged into the parent window
+or merged by external programs, called compositing managers.
 
 %package -n %lname
 Summary:        X11 protocol Composite extension client library
 Group:          System/Libraries
 
 %description -n %lname
-(Upstream has not provided a description)
+The Composite extension causes a entire sub-tree of the window
+hierarchy to be rendered to an off-screen buffer. Applications can
+then take the contents of that buffer and do whatever they like. The
+off-screen buffer can be automatically merged into the parent window
+or merged by external programs, called compositing managers.
 
 %package devel
 Summary:        Development files for the X11 Composite extension library
@@ -47,7 +57,16 @@ Group:          Development/Libraries/C and C++
 Requires:       %lname = %version
 
 %description devel
-(Upstream has not provided a description)
+The composite extension provides several related mechanisms:
+- Per-hierarchy storage: The rendering of an entire hierarchy of
+  windows is redirected to off-screen storage.
+- Automatic shadow update: When a hierarchy is rendered off-screen,
+  the X server provides an automatic mechanism for presenting those
+  contents within the parent window.
+- Composite overlay window: provides compositing managers with a
+  surface on which to draw without interference.
+- Parent window clipping: modifies the semantics of parent window
+  clipping in the presence of manual redirected children.
 
 This package contains the development headers for the library found
 in %lname.