diff --git a/src/tint/transform/decompose_strided_matrix.cc b/src/tint/transform/decompose_strided_matrix.cc
index a874e4e..4f2042a 100644
--- a/src/tint/transform/decompose_strided_matrix.cc
+++ b/src/tint/transform/decompose_strided_matrix.cc
@@ -167,7 +167,7 @@
     //   m = arr_to_mat(ssbo.mat)
     std::unordered_map<MatrixInfo, Symbol, MatrixInfo::Hasher> arr_to_mat;
     ctx.ReplaceAll([&](const ast::MemberAccessorExpression* expr) -> const ast::Expression* {
-        if (auto* access = src->Sem().Get<sem::StructMemberAccess>(expr)) {
+        if (auto* access = src->Sem().Get(expr)->UnwrapLoad()->As<sem::StructMemberAccess>()) {
             if (auto info = decomposed.Find(access->Member()->Declaration())) {
                 auto fn = utils::GetOrCreate(arr_to_mat, *info, [&] {
                     auto name =