diff --git a/pkgs/development/libraries/qt-5/modules/qtwebkit.nix b/pkgs/development/libraries/qt-5/modules/qtwebkit.nix
index ed41a4ac9bc..288a0e30f69 100644
--- a/pkgs/development/libraries/qt-5/modules/qtwebkit.nix
+++ b/pkgs/development/libraries/qt-5/modules/qtwebkit.nix
@@ -1,10 +1,9 @@
 { qtModule, stdenv, lib, fetchurl
 , qtbase, qtdeclarative, qtlocation, qtmultimedia, qtsensors, qtwebchannel
-, fontconfig, gtk2, libwebp, libxml2, libxslt
+, fontconfig, libwebp, libxml2, libxslt
 , sqlite, systemd, glib, gst_all_1, cmake
 , bison, flex, gdb, gperf, perl, pkg-config, python2, ruby
 , darwin
-, flashplayerFix ? false
 }:
 
 let
@@ -58,12 +57,6 @@ qtModule {
     ++ optional stdenv.cc.isGNU "-Wno-class-memaccess"
     # with clang this warning blows the log over Hydra's limit
     ++ optional stdenv.isDarwin "-Wno-inconsistent-missing-override"
-    ++ optionals flashplayerFix
-      [
-        ''-DNIXPKGS_LIBGTK2="${getLib gtk2}/lib/libgtk-x11-2.0"''
-        # this file used to exist in gdk_pixbuf?
-        ''-DNIXPKGS_LIBGDK2="${getLib gtk2}/lib/libgdk-x11-2.0"''
-      ]
     ++ optional (!stdenv.isDarwin) ''-DNIXPKGS_LIBUDEV="${getLib systemd}/lib/libudev"'';
 
   doCheck = false; # fails 13 out of 13 tests (ctest)