diff --git a/vulkan.spec b/vulkan.spec
index bff1ca2..45f54f9 100644
--- a/vulkan.spec
+++ b/vulkan.spec
@@ -67,6 +67,7 @@ BuildRequires:  python34
 %endif
 BuildRequires:  pkgconfig(x11)
 BuildRequires:  pkgconfig(xcb)
+BuildRequires:  pkgconfig(xrandr)
 
 Requires:       vulkan-filesystem = %{version}-%{release}
 
@@ -199,6 +200,7 @@ mkdir -p %{buildroot}%{_sysconfdir}/vulkan/icd.d
 %changelog
 * Tue Jan 24 2017 Leigh Scott <leigh123linux@googlemail.com> - 1.0.39.0-1
 - Update to 1.0.39.0 release
+- Add build requires libXrandr-devel
 
 * Fri Dec 16 2016 leigh scott <leigh123linux@googlemail.com> - 1.0.37.0-1
 - Update to 1.0.37.0 release