diff --git a/src/tint/ast/struct_member_align_attribute.cc b/src/tint/ast/struct_member_align_attribute.cc
index 7790800..8736dd10 100644
--- a/src/tint/ast/struct_member_align_attribute.cc
+++ b/src/tint/ast/struct_member_align_attribute.cc
@@ -21,8 +21,7 @@
 
 TINT_INSTANTIATE_TYPEINFO(tint::ast::StructMemberAlignAttribute);
 
-namespace tint {
-namespace ast {
+namespace tint::ast {
 
 StructMemberAlignAttribute::StructMemberAlignAttribute(ProgramID pid,
                                                        const Source& src,
@@ -42,5 +41,4 @@
   return ctx->dst->create<StructMemberAlignAttribute>(src, align);
 }
 
-}  // namespace ast
-}  // namespace tint
+}  // namespace tint::ast