diff --git a/libXrandr.spec b/libXrandr.spec
index 5891cbb..5375130 100644
--- a/libXrandr.spec
+++ b/libXrandr.spec
@@ -12,6 +12,7 @@ Source0: http://www.x.org/pub/individual/lib/%{name}-%{version}.tar.bz2
 BuildRequires: xorg-x11-proto-devel
 BuildRequires: pkgconfig(randrproto) >= 1.3.0
 BuildRequires: pkgconfig(xrender)
+BuildRequires: pkgconfig(xext)
 
 %description
 X.Org X11 libXrandr runtime library