diff --git a/pkgs/applications/networking/instant-messengers/sflphone/default.nix b/pkgs/applications/networking/instant-messengers/sflphone/default.nix
new file mode 100644
index 00000000000..4dbfa3da979
--- /dev/null
+++ b/pkgs/applications/networking/instant-messengers/sflphone/default.nix
@@ -0,0 +1,32 @@
+{ stdenv, fetchurl, libyaml, alsaLib, openssl, libuuid, pkgconfig, pulseaudio, libsamplerate,
+commoncpp2, ccrtp, libzrtpcpp, dbus, dbus_cplusplus, expat, pcre, gsm, speex, ilbc, libopus,
+autoconf, automake, libtool, gettext, perl }:
+
+stdenv.mkDerivation rec {
+  name = "sflphone-1.2.3";
+
+  src = fetchurl {
+    url = "https://projects.savoirfairelinux.com/attachments/download/6423/${name}.tar.gz";
+    sha256 = "0aiwlky7mp5l51a7kkhkmaz7ivapypar291kdxzdxl1s3qy0x6fd";
+  };
+
+  patches = [ ./libzrtpcpp-cflags.patch ];
+
+  preConfigure = ''
+    cd daemon
+
+    # Post patch, required
+    autoreconf -vfi
+
+    cd libs
+    bash ./compile_pjsip.sh
+    cd ..
+  '';
+
+  configureFlags = "--with-expat --with-expat-inc=${expat}/include " +
+    "--with-expat-lib=-lexpat --with-opus ";
+
+  buildInputs = [ libyaml alsaLib openssl libuuid pkgconfig pulseaudio libsamplerate 
+    commoncpp2 ccrtp libzrtpcpp dbus dbus_cplusplus expat pcre gsm speex ilbc libopus
+    autoconf automake libtool gettext perl ];
+}
diff --git a/pkgs/applications/networking/instant-messengers/sflphone/libzrtpcpp-cflags.patch b/pkgs/applications/networking/instant-messengers/sflphone/libzrtpcpp-cflags.patch
new file mode 100644
index 00000000000..972d9c58808
--- /dev/null
+++ b/pkgs/applications/networking/instant-messengers/sflphone/libzrtpcpp-cflags.patch
@@ -0,0 +1,15 @@
+diff --git a/daemon/src/audio/audiortp/Makefile.am b/daemon/src/audio/audiortp/Makefile.am
+index c27eedd..fe64077 100644
+--- a/daemon/src/audio/audiortp/Makefile.am
++++ b/daemon/src/audio/audiortp/Makefile.am
+@@ -4,6 +4,10 @@ noinst_LTLIBRARIES = libaudiortp.la
+ 
+ if BUILD_ZRTP
+ SFL_ZRTP_SRC=audio_zrtp_session.h audio_zrtp_session.cpp zrtp_session_callback.cpp zrtp_session_callback.h
++libaudiortp_la_CXXFLAGS = \
++		@CCGNU2_CFLAGS@ \
++		@ZRTPCPP_CFLAGS@ \
++		@CCRTP_CFLAGS@
+ endif
+ 
+ libaudiortp_la_SOURCES = \
diff --git a/pkgs/top-level/all-packages.nix b/pkgs/top-level/all-packages.nix
index 6316f0a7557..7ac7ff889ff 100644
--- a/pkgs/top-level/all-packages.nix
+++ b/pkgs/top-level/all-packages.nix
@@ -8107,6 +8107,8 @@ let
 
   seq24 = callPackage ../applications/audio/seq24 { };
 
+  sflphone = callPackage ../applications/networking/instant-messengers/sflphone { };
+
   siproxd = callPackage ../applications/networking/siproxd { };
 
   skype = callPackage_i686 ../applications/networking/instant-messengers/skype {
@@ -8115,7 +8117,6 @@ let
 
   skype4pidgin = callPackage ../applications/networking/instant-messengers/pidgin-plugins/skype4pidgin { };
 
-
   skype_call_recorder = callPackage ../applications/networking/instant-messengers/skype-call-recorder { };
 
   st = callPackage ../applications/misc/st {