diff --git a/pkgs/tools/graphics/gnuplot/default.nix b/pkgs/tools/graphics/gnuplot/default.nix
index 7e823711e331eb..9f6393b6372777 100644
--- a/pkgs/tools/graphics/gnuplot/default.nix
+++ b/pkgs/tools/graphics/gnuplot/default.nix
@@ -11,14 +11,14 @@
 , fontconfig ? null
 , gnused ? null
 , coreutils ? null
-, withQt ? false, qttools, qtbase, qtsvg
+, withQt ? false, mkDerivation, qttools, qtbase, qtsvg
 }:
 
 assert libX11 != null -> (fontconfig != null && gnused != null && coreutils != null);
 let
   withX = libX11 != null && !aquaterm && !stdenv.isDarwin;
 in
-stdenv.mkDerivation rec {
+(if withQt then mkDerivation else stdenv.mkDerivation) rec {
   name = "gnuplot-5.2.7";
 
   src = fetchurl {