diff --git a/pkgs/development/python-modules/wxPython/4.0.nix b/pkgs/development/python-modules/wxPython/4.0.nix
index 53a3f6b1e31..cd1e5b063bd 100644
--- a/pkgs/development/python-modules/wxPython/4.0.nix
+++ b/pkgs/development/python-modules/wxPython/4.0.nix
@@ -29,8 +29,6 @@ buildPythonPackage rec {
   nativeBuildInputs = [ pkgconfig which doxygen wxGTK ];
   buildInputs = [ ncurses wxGTK.gtk ];
 
-  hardeningDisable = [ "format" ];
-
   DOXYGEN = "${doxygen}/bin/doxygen";
 
   preConfigure = lib.optionalString (!stdenv.isDarwin) ''