diff --git a/ci/builders/mac_ios_engine.json b/ci/builders/mac_ios_engine.json
index 600f495929b0c..2773184435b03 100644
--- a/ci/builders/mac_ios_engine.json
+++ b/ci/builders/mac_ios_engine.json
@@ -49,7 +49,8 @@
         {
             "drone_dimensions": [
                 "device_type=none",
-                "os=Mac-12"
+                "os=Mac-12",
+		"cpu=x86-64"
             ],
             "gn": [
                 "--ios",
@@ -96,7 +97,8 @@
         {
             "drone_dimensions": [
                 "device_type=none",
-                "os=Mac-12"
+                "os=Mac-12",
+		"cpu=x86-64"
             ],
             "gn": [
                 "--ios",
diff --git a/tools/gn b/tools/gn
index 196219d35d611..7337c0aecafaa 100755
--- a/tools/gn
+++ b/tools/gn
@@ -209,8 +209,6 @@ def buildtools_dir():
   host_cpu = get_host_cpu()
   if host_os == 'win':
     host_os = 'windows'
-  if host_os == 'mac' and host_cpu == 'arm64':
-    host_cpu = 'x64'
   return '%s-%s' % (host_os, host_cpu)
 
 
@@ -456,7 +454,7 @@ def to_gn_args(args):
   #     must be x64 to target x64.
   # TODO(cbracken): https://github.com/flutter/flutter/issues/103386
   if get_host_os() == 'mac' and not args.force_mac_arm64:
-    gn_args['host_cpu'] = 'x64'
+    gn_args['host_cpu'] = get_host_cpu()
 
   if is_host_build(args) and gn_args['host_os'] == 'mac':
     # macOS unit tests include Vulkan headers which reference Metal types