diff --git a/pkgs/applications/networking/browsers/chromium/common.nix b/pkgs/applications/networking/browsers/chromium/common.nix
index 386957bed0c2..50d11ff39d84 100644
--- a/pkgs/applications/networking/browsers/chromium/common.nix
+++ b/pkgs/applications/networking/browsers/chromium/common.nix
@@ -387,9 +387,13 @@ let
       # depending on which part of the codebase you are in; see:
       # https://github.com/chromium/chromium/blob/d36462cc9279464395aea5e65d0893d76444a296/build/config/BUILDCONFIG.gn#L17-L44
       custom_toolchain = "//build/toolchain/linux/unbundle:default";
+      host_toolchain = "//build/toolchain/linux/unbundle:default";
+      # We only build those specific toolchains when we cross-compile, as native non-cross-compilations would otherwise
+      # end up building much more things than they need to (roughtly double the build steps and time/compute):
+    } // lib.optionalAttrs (stdenv.buildPlatform != stdenv.hostPlatform) {
       host_toolchain = "//build/toolchain/linux/unbundle:host";
       v8_snapshot_toolchain = "//build/toolchain/linux/unbundle:host";
-
+    } // {
       host_pkg_config = "${pkgsBuildBuild.pkg-config}/bin/pkg-config";
       pkg_config      = "${pkgsBuildHost.pkg-config}/bin/${stdenv.cc.targetPrefix}pkg-config";