diff --git a/pkgs/tools/security/duo-unix/default.nix b/pkgs/tools/security/duo-unix/default.nix
index 2070150a32e7..078e7cc06e0b 100644
--- a/pkgs/tools/security/duo-unix/default.nix
+++ b/pkgs/tools/security/duo-unix/default.nix
@@ -15,6 +15,7 @@ stdenv.mkDerivation rec {
       "--prefix=$(out)"
       "--sysconfdir=$(out)/etc/duo"
       "--with-openssl=${openssl}"
+      "--enable-lib64=no"
     ];
 
   meta = {