diff --git a/pkgs/servers/x11/xorg/xcb-util-xrm.nix b/pkgs/servers/x11/xorg/xcb-util-xrm.nix
index 9eb8add6856e..060a6b18a897 100644
--- a/pkgs/servers/x11/xorg/xcb-util-xrm.nix
+++ b/pkgs/servers/x11/xorg/xcb-util-xrm.nix
@@ -10,7 +10,7 @@ stdenv.mkDerivation rec {
   };
 
   buildInputs = [ pkgconfig m4 libxcb xcbutil ]
-    ++ stdenv.lib.optional doCheck [ libX11 ];
+    ++ stdenv.lib.optional doCheck libX11;
   doCheck = true;
 
   meta = with stdenv.lib; {