--- www-client/chromium/chromium-54.0.2837.0.ebuild
+++ www-client/chromium/chromium-54.0.2837.0.ebuild
@@ -573,6 +573,7 @@ src_configure() {
 	if use gn; then
 		tools/gn/bootstrap/bootstrap.py -v --gn-gen-args "${myconf_gn}" || die
 		out/Release/gn gen --args="${myconf_gn}" out/Release || die
+		rm -fv base/third_party/libevent/event.h
 	else
 		build/linux/unbundle/replace_gyp_files.py ${myconf_gyp} || die
 		egyp_chromium ${myconf_gyp} || die