--- ./third_party/zlib/BUILD.gn.orig
+++ ./third_party/zlib/BUILD.gn
@@ -21,7 +21,7 @@
     !(is_win && !is_clang)) {
   # TODO(richard.townsend@arm.com): Optimizations temporarily disabled for
   # Windows on Arm MSVC builds, see http://crbug.com/v8/10012.
-  if (arm_use_neon) {
+  if (arm_use_neon && is_clang) {
     use_arm_neon_optimizations = true
   }
 }