diff --git a/engine/src/flutter/shell/common/BUILD.gn b/engine/src/flutter/shell/common/BUILD.gn
index 0a4ba228c98..407dd7ff0d7 100644
--- a/engine/src/flutter/shell/common/BUILD.gn
+++ b/engine/src/flutter/shell/common/BUILD.gn
@@ -220,7 +220,7 @@ if (enable_unittests) {
       ":shell_unittests_gpu_configuration_config",
     ]
 
-    # SwiftShader only supports x86/x64_64
+    # SwiftShader only supports x86/x86_64
     if (target_cpu == "x86" || target_cpu == "x64") {
       if (test_enable_gl) {
         sources += [
diff --git a/engine/src/flutter/testing/BUILD.gn b/engine/src/flutter/testing/BUILD.gn
index b5033acafd8..fa9d9ef1d82 100644
--- a/engine/src/flutter/testing/BUILD.gn
+++ b/engine/src/flutter/testing/BUILD.gn
@@ -130,14 +130,14 @@ if (enable_unittests) {
       "//flutter/fml",
     ]
 
-    # SwiftShader only supports x86/x64_64
+    # SwiftShader only supports x86/x86_64
     if (target_cpu == "x86" || target_cpu == "x64") {
       configs += [ "//third_party/swiftshader_flutter:swiftshader_config" ]
       deps += [ "//third_party/swiftshader_flutter:swiftshader_vulkan" ]
     }
   }
 
-  # SwiftShader only supports x86/x64_64
+  # SwiftShader only supports x86/x86_64
   if (target_cpu == "x86" || target_cpu == "x64") {
     source_set("opengl") {
       testonly = true