diff --git a/pkgs/tools/networking/p2p/amule/default.nix b/pkgs/tools/networking/p2p/amule/default.nix
index 4ab93b7574a..78a07031e02 100644
--- a/pkgs/tools/networking/p2p/amule/default.nix
+++ b/pkgs/tools/networking/p2p/amule/default.nix
@@ -2,11 +2,8 @@
 , enableDaemon ? false # build amule daemon
 , httpServer ? false # build web interface for the daemon
 , client ? false # build amule remote gui
-, fetchFromGitHub, fetchpatch, stdenv, lib, zlib, wxGTK, perl, cryptopp, libupnp, gettext, libpng ? null
-, autoreconfHook, pkg-config, makeWrapper, libX11 ? null }:
-
-assert httpServer -> libpng != null;
-assert client -> libX11 != null;
+, fetchFromGitHub, stdenv, lib, zlib, wxGTK, perl, cryptopp, libupnp, gettext, libpng
+, autoreconfHook, pkg-config, makeWrapper, libX11 }:
 
 stdenv.mkDerivation rec {
   pname = "amule";