diff --git a/pkgs/applications/video/kmplayer/default.nix b/pkgs/applications/video/kmplayer/default.nix
index 88055f2a824..44313f9499f 100644
--- a/pkgs/applications/video/kmplayer/default.nix
+++ b/pkgs/applications/video/kmplayer/default.nix
@@ -1,6 +1,7 @@
 {
   mkDerivation, lib, fetchurl,
   extra-cmake-modules, makeWrapper,
+  libpthreadstubs, libXdmcp,
   qtsvg, qtx11extras, ki18n, kdelibs4support, kio, kmediaplayer, kwidgetsaddons,
   phonon, cairo, mplayer
 }:
@@ -29,6 +30,7 @@ mkDerivation rec {
   nativeBuildInputs = [ extra-cmake-modules makeWrapper ];
 
   buildInputs = [
+    libpthreadstubs libXdmcp
     qtsvg qtx11extras ki18n kdelibs4support kio kmediaplayer kwidgetsaddons
     phonon cairo
   ];