diff --git a/build/config/compiler/BUILD.gn b/build/config/compiler/BUILD.gn
index c305f123..92cad1c1 100644
--- a/build/config/compiler/BUILD.gn
+++ b/build/config/compiler/BUILD.gn
@@ -30,9 +30,6 @@ if (current_cpu == "mipsel" || current_cpu == "mips64el" ||
     current_cpu == "mips" || current_cpu == "mips64") {
   import("//build/config/mips.gni")
 }
-if (current_cpu == "x64") {
-  import("//build/config/x64.gni")
-}
 if (is_mac) {
   import("//build/config/apple/symbols.gni")
 }
@@ -900,7 +897,6 @@ config("compiler_cpu_abi") {
     if (current_cpu == "x64") {
       cflags += [
         "-m64",
-        "-march=$x64_arch",
         "-mavx",
         "-maes",
       ]