diff --git a/pkgs/tools/admin/tightvnc/default.nix b/pkgs/tools/admin/tightvnc/default.nix
index ad8fa50a299c..8b6f3b3835c4 100644
--- a/pkgs/tools/admin/tightvnc/default.nix
+++ b/pkgs/tools/admin/tightvnc/default.nix
@@ -1,4 +1,5 @@
-{stdenv, fetchurl, x11, zlib, libjpeg, imake, gccmakedep, libXmu, libXaw, libXpm, libXp , perl, xauth}:
+# hint: don't forget to start xfs font server (configuration.nix)
+{stdenv, fetchurl, x11, zlib, libjpeg, imake, gccmakedep, libXmu, libXaw, libXpm, libXp , perl, xauth, rgb}:
 
 stdenv.mkDerivation {
   name = "tightvnc-1.3.9";
@@ -10,5 +11,5 @@ stdenv.mkDerivation {
     sha256 = "0nij6kyzwxf7nblwd6riwqhzh8b8xwdffpj379zi5y9mcmiwmalr";
   };
   buildInputs = [x11 zlib libjpeg imake gccmakedep libXmu libXaw libXpm libXp
-  	xauth];
+  	xauth rgb];
 }
diff --git a/pkgs/top-level/all-packages.nix b/pkgs/top-level/all-packages.nix
index 02434f5936f8..decc0d0825cd 100644
--- a/pkgs/top-level/all-packages.nix
+++ b/pkgs/top-level/all-packages.nix
@@ -1003,7 +1003,7 @@ rec {
 
   tightvnc = import ../tools/admin/tightvnc {
     inherit fetchurl stdenv x11 zlib libjpeg perl;
-    inherit (xlibs) imake gccmakedep libXmu libXaw libXpm libXp xauth;
+    inherit (xlibs) imake gccmakedep libXmu libXaw libXpm libXp xauth rgb;
   };
 
   time = import ../tools/misc/time {