diff --git a/pkgs/applications/networking/instant-messengers/rambox/default.nix b/pkgs/applications/networking/instant-messengers/rambox/default.nix
index 7cb89f019e0e..38d489de02af 100644
--- a/pkgs/applications/networking/instant-messengers/rambox/default.nix
+++ b/pkgs/applications/networking/instant-messengers/rambox/default.nix
@@ -1,4 +1,4 @@
-{ stdenv, fetchurl, makeDesktopItem
+{ stdenv, fetchurl, dpkg
 , xorg, gtk2, atk, glib, pango, gdk_pixbuf, cairo, freetype, fontconfig
 , gnome2, dbus, nss, nspr, alsaLib, cups, expat, udev, libnotify }:
 
@@ -6,7 +6,7 @@ let
   bits = if stdenv.system == "x86_64-linux" then "x64"
          else "ia32";
 
-  version = "0.5.10";
+  version = "0.5.12";
 
   runtimeDeps = [
     udev libnotify
@@ -18,53 +18,45 @@ let
     gtk2 atk glib pango gdk_pixbuf cairo freetype fontconfig dbus
     gnome2.GConf nss nspr alsaLib cups expat stdenv.cc.cc
   ] ++ runtimeDeps;
-
-  myIcon = fetchurl {
-    url = "https://raw.githubusercontent.com/saenzramiro/rambox/9e4444e6297dd35743b79fe23f8d451a104028d5/resources/Icon.png";
-    sha256 = "0r00l4r5mlbgn689i3rp6ks11fgs4h2flvrlggvm2qdd974d1x0b";
-  };
-  desktopItem = makeDesktopItem rec {
-    name = "Rambox";
-    exec = "rambox";
-    icon = myIcon;
-    desktopName = name;
-    genericName = "Rambox messenger";
-    categories = "Network;";
-  };
 in stdenv.mkDerivation rec {
   name = "rambox-${version}";
   src = fetchurl {
-    url = "https://github.com/saenzramiro/rambox/releases/download/${version}/Rambox-${version}-${bits}.tar.gz";
+    url = "https://github.com/saenzramiro/rambox/releases/download/${version}/Rambox_${version}-${bits}.deb";
     sha256 = if bits == "x64" then
-      "1i5jbhsfdbhr0rsb5w2pfpwjiagz47ppxk65qny3ay3lr4lbccn3" else
-      "1p1m6vsa9xvl3pjf3pygvllyk7j4q9vnlzmrizb8f5q30fpls25x";
+      "1jlvpq7wryz4vf6xlsb9c38jrhjiv18rdf2ndlv76png60wl8418" else
+      "063j3gcpp18wdvspy7d43cgv7i5v8c42hn2zpp083jixw9ddsqwa";
   };
 
   # don't remove runtime deps
   dontPatchELF = true;
 
+  buildInputs = [ dpkg ];
+
+  unpackPhase = "dpkg-deb -x $src .";
+
   installPhase = ''
-    patchelf --set-interpreter "$(cat $NIX_CC/nix-support/dynamic-linker)" rambox
-    patchelf --set-rpath "$out/opt/rambox:${stdenv.lib.makeLibraryPath deps}" rambox
+    patchelf --set-interpreter "$(cat $NIX_CC/nix-support/dynamic-linker)" opt/Rambox/rambox
+    patchelf --set-rpath "$out/opt/Rambox:${stdenv.lib.makeLibraryPath deps}" opt/Rambox/rambox
 
-    mkdir -p $out/bin $out/opt/rambox
-    cp -r * $out/opt/rambox
-    ln -s $out/opt/rambox/rambox $out/bin
+    mkdir -p $out/bin
+    cp -r opt $out
+    ln -s $out/opt/Rambox/rambox $out/bin
 
-    # provide desktop item
-    mkdir -p $out/share/applications
-    ln -s ${desktopItem}/share/applications/* $out/share/applications
+    # provide resources
+    cp -r usr/share $out
+    substituteInPlace $out/share/applications/rambox.desktop \
+      --replace Exec=\"/opt/Rambox/rambox\" Exec=rambox
   '';
 
   postFixup = ''
-    paxmark m $out/opt/rambox/rambox
+    paxmark m $out/opt/Rambox/rambox
   '';
 
   meta = with stdenv.lib; {
     description = "Free and Open Source messaging and emailing app that combines common web applications into one";
     homepage = http://rambox.pro;
     license = licenses.mit;
-    maintainers = [ stdenv.lib.maintainers.gnidorah ];
+    maintainers = [ maintainers.gnidorah ];
     platforms = ["i686-linux" "x86_64-linux"];
     hydraPlatforms = [];
   };