diff --git a/pkgs/by-name/xt/xterm/package.nix b/pkgs/by-name/xt/xterm/package.nix
index 0e8275c4c94e..a60d3ab31362 100644
--- a/pkgs/by-name/xt/xterm/package.nix
+++ b/pkgs/by-name/xt/xterm/package.nix
@@ -83,6 +83,8 @@ stdenv.mkDerivation rec {
     echo '#define USE_UTMP_SETGID 1'
   '';
 
+  enableParallelBuilding = true;
+
   postInstall = ''
     for bin in $out/bin/*; do
       wrapProgram $bin --set XAPPLRESDIR $out/lib/X11/app-defaults/