diff --git a/Memory/Buffer.h b/Memory/Buffer.h
index ed96ec0..85e00a6 100644
--- a/Memory/Buffer.h
+++ b/Memory/Buffer.h
@@ -448,8 +448,8 @@ namespace Alepha::Hydrogen::inline exports::inline Buffer_m
 
 template<>
 constexpr auto
-std::cbegin( const ::Alepha::Hydrogen::Buffer< Alepha::Hydrogen::Mutable > &range ) -> decltype( range.begin() )= delete;
+std::cbegin( const ::Alepha::Hydrogen::Buffer< Alepha::Hydrogen::Mutable > &range ) noexcept( noexcept( std::begin( range ) ) ) -> decltype( range.begin() )= delete;
 
 template<>
 constexpr auto
-std::cend( const ::Alepha::Hydrogen::Buffer< Alepha::Hydrogen::Mutable > &range ) -> decltype( range.end() )= delete;
+std::cend( const ::Alepha::Hydrogen::Buffer< Alepha::Hydrogen::Mutable > &range ) noexcept( noexcept( std::end( range ) ) ) -> decltype( range.end() )= delete;