4 files changed, 4 insertions, 4 deletions
diff --git a/pkgs/misc/emulators/dosbox/default.nix b/pkgs/misc/emulators/dosbox/default.nix
index bbaa565e352e..d57ef5ae16da 100644
--- a/pkgs/misc/emulators/dosbox/default.nix
+++ b/pkgs/misc/emulators/dosbox/default.nix
@@ -20,7 +20,7 @@ stdenv.mkDerivation rec {
 
   buildInputs = [ SDL ];
 
-  hardening_format = false;
+  hardeningDisable = [ "format" ];
 
   desktopItem = makeDesktopItem {
     name = "dosbox";
diff --git a/pkgs/misc/emulators/mupen64plus/default.nix b/pkgs/misc/emulators/mupen64plus/default.nix
index dc3c14128566..1abf621fe7e0 100644
--- a/pkgs/misc/emulators/mupen64plus/default.nix
+++ b/pkgs/misc/emulators/mupen64plus/default.nix
@@ -9,7 +9,7 @@ stdenv.mkDerivation {
 
   buildInputs = [ which pkgconfig SDL gtk mesa SDL_ttf ];
 
-  hardening_format = false;
+  hardeningDisable = [ "format" ];
 
   preConfigure = ''
     # Some C++ incompatibility fixes
diff --git a/pkgs/misc/emulators/nestopia/default.nix b/pkgs/misc/emulators/nestopia/default.nix
index 3ed455bd350f..6620018c3376 100644
--- a/pkgs/misc/emulators/nestopia/default.nix
+++ b/pkgs/misc/emulators/nestopia/default.nix
@@ -11,7 +11,7 @@ stdenv.mkDerivation rec {
   # nondeterministic failures when creating directories
   enableParallelBuilding = false;
 
-  hardening_format = false;
+  hardeningDisable = [ "format" ];
 
   buildInputs = [ pkgconfig SDL2 alsaLib gtk3 mesa_glu mesa makeWrapper
                   libarchive libao unzip xdg_utils gsettings_desktop_schemas ];
diff --git a/pkgs/misc/emulators/uae/default.nix b/pkgs/misc/emulators/uae/default.nix
index 54620699f2d8..9e773b18f7db 100644
--- a/pkgs/misc/emulators/uae/default.nix
+++ b/pkgs/misc/emulators/uae/default.nix
@@ -12,7 +12,7 @@ stdenv.mkDerivation rec {
 
   buildInputs = [ pkgconfig gtk alsaLib SDL ];
 
-  hardening_format = false;
+  hardeningDisable = [ "format" ];
 
   meta = {
     description = "Ultimate/Unix/Unusable Amiga Emulator";