diff --git a/pkgs/top-level/all-packages.nix b/pkgs/top-level/all-packages.nix
index 2813b09e1f105..b3dc8e8d4ffe7 100644
--- a/pkgs/top-level/all-packages.nix
+++ b/pkgs/top-level/all-packages.nix
@@ -15668,7 +15668,6 @@ with pkgs;
 
   default-gcc-version =
     if (with stdenv.targetPlatform; isVc4 || libc == "relibc") then 6
-    else if stdenv.buildPlatform.isDarwin  then 12  # unable to test
     else 13;
   gcc = pkgs.${"gcc${toString default-gcc-version}"};
   gccFun = callPackage ../development/compilers/gcc;