diff --git a/pkgs/games/dwarf-fortress/default.nix b/pkgs/games/dwarf-fortress/default.nix
index 15227c7173e..d26258081fc 100644
--- a/pkgs/games/dwarf-fortress/default.nix
+++ b/pkgs/games/dwarf-fortress/default.nix
@@ -3,7 +3,6 @@
 let
   callPackage = pkgs.newScope self;
   callPackage_i686 = pkgsi686Linux.newScope self;
-  oldAbiStdenv = pkgs.overrideInStdenv pkgs.stdenv [ pkgs.useOldCXXAbi ];
 
   self = rec {
     dwarf-fortress-original = callPackage ./game.nix { };