diff --git a/include/vectorwrapper/implem_vec_common.hpp b/include/vectorwrapper/implem_vec_common.hpp
index 8a1a89e..060eb79 100644
--- a/include/vectorwrapper/implem_vec_common.hpp
+++ b/include/vectorwrapper/implem_vec_common.hpp
@@ -28,6 +28,8 @@ namespace vwr {
 	template <typename V>
 	struct VectorWrapperInfo;
 
+	typedef decltype(sizeof(int)) vwr_size_t;
+
 	template <typename V, size_type S=VectorWrapperInfo<V>::dimensions>
 	class Vec;
 
@@ -62,29 +64,27 @@ namespace vwr {
 
 		template <typename T, size_type I> struct get_offset_enum_from_index;
 		template <typename T> struct get_offset_enum_from_index<T, 0> {
-			enum { value = VectorWrapperInfo<T>::offset_x };
+			static constexpr vwr_size_t value = VectorWrapperInfo<T>::offset_x;
 		};
 		template <typename T> struct get_offset_enum_from_index<T, 1> {
-			enum { value = VectorWrapperInfo<T>::offset_y };
+			static constexpr vwr_size_t value = VectorWrapperInfo<T>::offset_y;
 		};
 		template <typename T> struct get_offset_enum_from_index<T, 2> {
-			enum { value = VectorWrapperInfo<T>::offset_z };
+			static constexpr vwr_size_t value = VectorWrapperInfo<T>::offset_z;
 		};
 		template <typename T> struct get_offset_enum_from_index<T, 3> {
-			enum { value = VectorWrapperInfo<T>::offset_w };
+			static constexpr vwr_size_t value = VectorWrapperInfo<T>::offset_w;
 		};
 
 		template <typename T, size_type S=VectorWrapperInfo<T>::dimensions> struct min_offset {
-			enum {
-				value = (
+			static constexpr vwr_size_t value = (
 					static_cast<int>(get_offset_enum_from_index<T, S-1>::value) < static_cast<int>(min_offset<T, S-1>::value) ?
 						static_cast<int>(get_offset_enum_from_index<T, S-1>::value) :
 						static_cast<int>(min_offset<T, S-1>::value)
-					)
-			};
+					);
 		};
 		template <typename T> struct min_offset<T, 1> {
-			enum { value = get_offset_enum_from_index<T, 0>::value };
+			static constexpr vwr_size_t value = get_offset_enum_from_index<T, 0>::value;
 		};
 	} //namespace implem
 } //namespace vwr