diff --git a/pkgs/servers/dns/bind/default.nix b/pkgs/servers/dns/bind/default.nix
index e39dcb94d5c..0f551f489a6 100644
--- a/pkgs/servers/dns/bind/default.nix
+++ b/pkgs/servers/dns/bind/default.nix
@@ -30,8 +30,6 @@ stdenv.mkDerivation rec {
     ++ lib.optional enableSeccomp libseccomp
     ++ lib.optional enablePython (python3.withPackages (ps: with ps; [ ply ]));
 
-  STD_CDEFINES = [ "-DDIG_SIGCHASE=1" ]; # support +sigchase
-
   depsBuildBuild = [ buildPackages.stdenv.cc ];
 
   configureFlags = [