diff --git a/pkgs/tools/networking/siege/default.nix b/pkgs/tools/networking/siege/default.nix
index fee3db878ac7..c88557262b25 100644
--- a/pkgs/tools/networking/siege/default.nix
+++ b/pkgs/tools/networking/siege/default.nix
@@ -1,4 +1,4 @@
-{ stdenv, fetchurl }:
+{ stdenv, fetchurl, openssl }:
 
 stdenv.mkDerivation rec {
   name = "siege-3.0.6";
@@ -10,6 +10,8 @@ stdenv.mkDerivation rec {
 
   NIX_LDFLAGS = stdenv.lib.optionalString stdenv.isLinux "-lgcc_s";
 
+  configureFlags = [ "--with-ssl=${openssl}" ];
+
   meta = with stdenv.lib; {
     description = "HTTP load tester";
     maintainers = with maintainers; [ ocharles raskin ];