--- a/xulrunner/xulrunner.spec	Sat Feb 18 22:22:24 2012 +0100
+++ b/xulrunner/xulrunner.spec	Tue Feb 21 16:36:37 2012 +0100
@@ -33,6 +33,7 @@
 BuildRequires:  python
 BuildRequires:  startup-notification-devel
 BuildRequires:  unzip
+BuildRequires:  xorg-x11-devel
 BuildRequires:  yasm
 BuildRequires:  zip
 %if %suse_version > 1110