diff --git a/Meta/Container/vector.h b/Meta/Container/vector.h
index 6e93eec..16881ac 100644
--- a/Meta/Container/vector.h
+++ b/Meta/Container/vector.h
@@ -69,6 +69,7 @@ namespace Alepha::Hydrogen::Meta::Container
 		};
 
 		template< typename MetaFunction, typename Arg1, typename First, typename ... Members >
+		requires( sizeof...( Members ) != 0 )
 		constexpr decltype( auto )
 		invoke_call( MetaFunction func, type_value< Arg1 > arg1, dereferenced_iterator< vector< First, Members... > > deref )
 		{