diff --git a/pkgs/games/gemrb/default.nix b/pkgs/games/gemrb/default.nix
index 0e9025259224..fc7bf7168ddf 100644
--- a/pkgs/games/gemrb/default.nix
+++ b/pkgs/games/gemrb/default.nix
@@ -1,5 +1,6 @@
 { stdenv, fetchFromGitHub, cmake
-, freetype, SDL2, SDL2_mixer, openal, zlib, libpng, python, libvorbis }:
+, freetype, SDL2, SDL2_mixer, openal, zlib, libpng, python, libvorbis
+, libiconv }:
 
 stdenv.mkDerivation rec {
   name = "gemrb-${version}";
@@ -13,7 +14,7 @@ stdenv.mkDerivation rec {
   };
 
   # TODO: make libpng, libvorbis, sdl_mixer, freetype, vlc, glew (and other gl reqs) optional
-  buildInputs = [ freetype python openal SDL2 SDL2_mixer zlib libpng libvorbis ];
+  buildInputs = [ freetype python openal SDL2 SDL2_mixer zlib libpng libvorbis libiconv ];
 
   nativeBuildInputs = [ cmake ];