diff --git a/src/tint/writer/msl/generator_impl.cc b/src/tint/writer/msl/generator_impl.cc
index df9ff4bf55..0435918537 100644
--- a/src/tint/writer/msl/generator_impl.cc
+++ b/src/tint/writer/msl/generator_impl.cc
@@ -347,7 +347,7 @@ bool GeneratorImpl::Generate() {
         // WGSL can ignore the invariant attribute on pre MSL 2.1 devices.
         // See: https://github.com/gpuweb/gpuweb/issues/893#issuecomment-745537465
         line(&helpers_) << "#if __METAL_VERSION__ >= 210";
-        line(&helpers_) << "#define " << invariant_define_name_ << " @invariant";
+        line(&helpers_) << "#define " << invariant_define_name_ << " [[invariant]]";
         line(&helpers_) << "#else";
         line(&helpers_) << "#define " << invariant_define_name_;
         line(&helpers_) << "#endif";
diff --git a/src/tint/writer/msl/generator_impl_test.cc b/src/tint/writer/msl/generator_impl_test.cc
index 4772d469d6..41333dbab9 100644
--- a/src/tint/writer/msl/generator_impl_test.cc
+++ b/src/tint/writer/msl/generator_impl_test.cc
@@ -119,7 +119,7 @@ TEST_F(MslGeneratorImplTest, HasInvariantAttribute_True) {
 using namespace metal;
 
 #if __METAL_VERSION__ >= 210
-#define TINT_INVARIANT @invariant
+#define TINT_INVARIANT [[invariant]]
 #else
 #define TINT_INVARIANT
 #endif
diff --git a/test/tint/shader_io/invariant.wgsl.expected.msl b/test/tint/shader_io/invariant.wgsl.expected.msl
index 4f6e6f5645..78a68446ef 100644
--- a/test/tint/shader_io/invariant.wgsl.expected.msl
+++ b/test/tint/shader_io/invariant.wgsl.expected.msl
@@ -3,7 +3,7 @@
 using namespace metal;
 
 #if __METAL_VERSION__ >= 210
-#define TINT_INVARIANT @invariant
+#define TINT_INVARIANT [[invariant]]
 #else
 #define TINT_INVARIANT
 #endif
diff --git a/test/tint/shader_io/invariant_struct_member.wgsl.expected.msl b/test/tint/shader_io/invariant_struct_member.wgsl.expected.msl
index 1af16da6f6..1ffeca1c20 100644
--- a/test/tint/shader_io/invariant_struct_member.wgsl.expected.msl
+++ b/test/tint/shader_io/invariant_struct_member.wgsl.expected.msl
@@ -3,7 +3,7 @@
 using namespace metal;
 
 #if __METAL_VERSION__ >= 210
-#define TINT_INVARIANT @invariant
+#define TINT_INVARIANT [[invariant]]
 #else
 #define TINT_INVARIANT
 #endif