diff --git a/sycl/include/sycl/types.hpp b/sycl/include/sycl/types.hpp
index ae1b2655d7320..2a59173c684c7 100644
--- a/sycl/include/sycl/types.hpp
+++ b/sycl/include/sycl/types.hpp
@@ -916,7 +916,7 @@ template <typename Type, int NumElements> class vec {
   __SYCL2020_DEPRECATED(
       "get_size() is deprecated, please use byte_size() instead")
   static constexpr size_t get_size() { return byte_size(); }
-  static constexpr size_t byte_size() { return sizeof(m_Data); }
+  static constexpr size_t byte_size() noexcept { return sizeof(m_Data); }
 
   template <typename convertT,
             rounding_mode roundingMode = rounding_mode::automatic>
diff --git a/sycl/test-e2e/Basic/vector_operators.cpp b/sycl/test-e2e/Basic/vector_operators.cpp
index b64f9adf93d41..d149af28de62b 100644
--- a/sycl/test-e2e/Basic/vector_operators.cpp
+++ b/sycl/test-e2e/Basic/vector_operators.cpp
@@ -35,6 +35,7 @@ template <typename T, int N> void check_vector_size() {
   constexpr auto length = (N == 3 ? 4 : N);
   assert(Vec.size() == N);
   assert(Vec.byte_size() == sizeof(T) * length);
+  static_assert(noexcept(Vec.byte_size()));
 }
 
 int main() {