diff --git a/pkgs/development/libraries/libdwg/default.nix b/pkgs/development/libraries/libdwg/default.nix
index 8ffa1ff81924..2ee4e1fdb68e 100644
--- a/pkgs/development/libraries/libdwg/default.nix
+++ b/pkgs/development/libraries/libdwg/default.nix
@@ -10,6 +10,8 @@ stdenv.mkDerivation {
 
   nativeBuildInputs = [ indent ];
 
+  hardeningDisable = [ "format" ];
+
   meta = {
     description = "library reading dwg files";
     homepage = http://libdwg.sourceforge.net/en/;