diff --git a/pkgs/tools/misc/xvfb-run/default.nix b/pkgs/tools/misc/xvfb-run/default.nix
index fc87723208ed..eb1e7c5b01b7 100644
--- a/pkgs/tools/misc/xvfb-run/default.nix
+++ b/pkgs/tools/misc/xvfb-run/default.nix
@@ -38,7 +38,7 @@ stdenvNoCC.mkDerivation rec {
     chmod a+x $out/bin/xvfb-run
     patchShebangs $out/bin/xvfb-run
     wrapProgram $out/bin/xvfb-run \
-      --set FONTCONFIG_FILE "${fontsConf}" \
+      --set-default FONTCONFIG_FILE "${fontsConf}" \
       --prefix PATH : ${lib.makeBinPath [ getopt xorgserver xauth which util-linux gawk coreutils ]}
   '';