diff --git a/pkgs/development/libraries/ucommon/default.nix b/pkgs/development/libraries/ucommon/default.nix
index 2641d01b7b75..0e10834a0c51 100644
--- a/pkgs/development/libraries/ucommon/default.nix
+++ b/pkgs/development/libraries/ucommon/default.nix
@@ -1,4 +1,4 @@
-{ fetchurl, stdenv, openssl, pkgconfig, zlib }:
+{ fetchurl, stdenv, gnutls, pkgconfig, zlib }:
 
 stdenv.mkDerivation rec {
   name = "ucommon-4.0.5";
@@ -8,7 +8,7 @@ stdenv.mkDerivation rec {
     sha256 = "1h2xyb9s1xivpr5039jhhcqvd7ygn37si8yvmh5fd57n1y8by6vm";
   };
 
-  buildInputs = [ pkgconfig openssl zlib ];
+  buildInputs = [ pkgconfig gnutls zlib ];
 
   doCheck = true;
 
diff --git a/pkgs/servers/sip/sipwitch/default.nix b/pkgs/servers/sip/sipwitch/default.nix
index 014d850a5279..01f91c1fdd72 100644
--- a/pkgs/servers/sip/sipwitch/default.nix
+++ b/pkgs/servers/sip/sipwitch/default.nix
@@ -1,4 +1,4 @@
-{ fetchurl, stdenv, pkgconfig, ucommon, libosip, libexosip, openssl, zlib }:
+{ fetchurl, stdenv, pkgconfig, ucommon, libosip, libexosip, gnutls, zlib }:
 
 stdenv.mkDerivation rec {
   name = "sipwitch-0.9.2";
@@ -8,7 +8,7 @@ stdenv.mkDerivation rec {
     sha256 = "1xww6v4s45ss7v4548gxk6dgal5605cxnvdfsblmqn3ydzp6227h";
   };
 
-  buildInputs = [ pkgconfig ucommon libosip libexosip openssl zlib ];
+  buildInputs = [ pkgconfig ucommon libosip libexosip gnutls zlib ];
 
   preConfigure = ''
     export configureFlags="--sysconfdir=$out/etc"