diff --git a/pkgs/tools/security/tboot/default.nix b/pkgs/tools/security/tboot/default.nix
index f5184b985622..f52060b5c60c 100644
--- a/pkgs/tools/security/tboot/default.nix
+++ b/pkgs/tools/security/tboot/default.nix
@@ -17,6 +17,8 @@ stdenv.mkDerivation rec {
 
   hardeningDisable = [ "pic" "stackprotector" ];
 
+  NIX_CFLAGS_COMPILE = [ "-Wno-error=address-of-packed-member" ];
+
   configurePhase = ''
     for a in lcptools utils tb_polgen; do
       substituteInPlace $a/Makefile --replace /usr/sbin /sbin