diff --git a/build/config/compiler/BUILD.gn b/build/config/compiler/BUILD.gn
index 1bd7018705..b389d2ca0a 100644
--- a/build/config/compiler/BUILD.gn
+++ b/build/config/compiler/BUILD.gn
@@ -177,7 +177,7 @@ config("compiler") {
       common_mac_flags += [
         "-arch",
         "x86_64",
-        "-msse2",
+        "-march=core2",
       ]
     } else if (current_cpu == "x86") {
       common_mac_flags += [