diff --git a/pkgs/tools/security/monkeysphere/default.nix b/pkgs/tools/security/monkeysphere/default.nix
index f0d3a870676..d1266ca495e 100644
--- a/pkgs/tools/security/monkeysphere/default.nix
+++ b/pkgs/tools/security/monkeysphere/default.nix
@@ -24,6 +24,11 @@ stdenv.mkDerivation rec {
         CryptOpenSSLRSA
         CryptOpenSSLBignum
       ]}"
+    wrapProgram $out/bin/monkeysphere --prefix PERL5LIB :\
+      "${with perlPackages; stdenv.lib.makePerlPath [
+        CryptOpenSSLRSA
+        CryptOpenSSLBignum
+      ]}"
   '';
 
   meta = with stdenv.lib; {