diff --git a/include/igloo/ro.h b/include/igloo/ro.h
index fb996f0..92b112e 100644
--- a/include/igloo/ro.h
+++ b/include/igloo/ro.h
@@ -230,22 +230,24 @@ int igloo_ro_new__return_zero(igloo_ro_t self, const igloo_ro_type_t *type, va_l
 /* ---[ END PRIVATE ]--- */
 
 igloo_ro_t      igloo_RO_TO_TYPE_raw(igloo_ro_t object, const igloo_ro_type_t *type);
+#define igloo_RO_GET_TYPE_BY_SYMBOL(x)  (igloo_ro__type__ ## x)
+
 #ifdef IGLOO_CTC_HAVE_TYPE_ATTRIBUTE_TRANSPARENT_UNION
 #define igloo_RO__GETBASE(x)        (((igloo_ro_t)(x)).subtype__igloo_ro_base_t)
 #define igloo_RO_NULL               ((igloo_ro_t)(igloo_ro_base_t*)NULL)
 #define igloo_RO_IS_NULL(x)         (igloo_RO__GETBASE((x)) == NULL)
-#define igloo_RO_TO_TYPE(x,type)    (((igloo_ro_t)igloo_RO_TO_TYPE_raw((x), (igloo_ro__type__ ## type))).subtype__ ## type)
+#define igloo_RO_TO_TYPE(x,type)    (((igloo_ro_t)igloo_RO_TO_TYPE_raw((x), igloo_RO_GET_TYPE_BY_SYMBOL(type))).subtype__ ## type)
 #else
 #define igloo_RO__GETBASE(x)        ((igloo_ro_base_t*)(x))
 #define igloo_RO_NULL               NULL
 #define igloo_RO_IS_NULL(x)         ((x) == NULL)
-#define igloo_RO_TO_TYPE(x,type)    ((type*)igloo_RO_TO_TYPE_raw((x), (igloo_ro__type__ ## type)))
+#define igloo_RO_TO_TYPE(x,type)    ((type*)igloo_RO_TO_TYPE_raw((x), igloo_RO_GET_TYPE_BY_SYMBOL(type)))
 #endif
 
 #define igloo_RO_GET_TYPE(x)        (igloo_RO__GETBASE((x)) == NULL ? NULL : igloo_RO__GETBASE((x))->type)
 #define igloo_RO_GET_TYPENAME(x)    (igloo_RO_GET_TYPE((x)) == NULL ? NULL : igloo_RO_GET_TYPE((x))->type_name)
 int             igloo_RO_IS_VALID_raw(igloo_ro_t object, const igloo_ro_type_t *type);
-#define igloo_RO_IS_VALID(x,type)   igloo_RO_IS_VALID_raw((x), (igloo_ro__type__ ## type))
+#define igloo_RO_IS_VALID(x,type)   igloo_RO_IS_VALID_raw((x), igloo_RO_GET_TYPE_BY_SYMBOL(type))
 int             igloo_RO_HAS_TYPE_raw(igloo_ro_t object, const igloo_ro_type_t *type);
 #define igloo_RO_HAS_TYPE(x,type)   igloo_RO_HAS_TYPE_raw((x), (type))
 
@@ -256,11 +258,11 @@ int             igloo_RO_HAS_TYPE_raw(igloo_ro_t object, const igloo_ro_type_t *
  */
 
 igloo_ro_t      igloo_ro_new__raw(const igloo_ro_type_t *type, const char *name, igloo_ro_t associated);
-#define         igloo_ro_new_raw(type, name, associated)  igloo_RO_TO_TYPE(igloo_ro_new__raw((igloo_ro__type__ ## type), (name), (associated)), type)
+#define         igloo_ro_new_raw(type, name, associated)  igloo_RO_TO_TYPE(igloo_ro_new__raw(igloo_RO_GET_TYPE_BY_SYMBOL(type), (name), (associated)), type)
 
 igloo_ro_t      igloo_ro_new__simple(const igloo_ro_type_t *type, const char *name, igloo_ro_t associated, ...);
-#define         igloo_ro_new(type, ...)  igloo_RO_TO_TYPE(igloo_ro_new__simple((igloo_ro__type__ ## type), NULL, igloo_RO_NULL, ## __VA_ARGS__), type)
-#define         igloo_ro_new_ext(type, name, associated, ...)  igloo_RO_TO_TYPE(igloo_ro_new__simple((igloo_ro__type__ ## type), (name), (associated), ## __VA_ARGS__), type)
+#define         igloo_ro_new(type, ...)  igloo_RO_TO_TYPE(igloo_ro_new__simple(igloo_RO_GET_TYPE_BY_SYMBOL(type), NULL, igloo_RO_NULL, ## __VA_ARGS__), type)
+#define         igloo_ro_new_ext(type, name, associated, ...)  igloo_RO_TO_TYPE(igloo_ro_new__simple(igloo_RO_GET_TYPE_BY_SYMBOL(type), (name), (associated), ## __VA_ARGS__), type)
 
 /* This increases the reference counter of the object */
 int             igloo_ro_ref(igloo_ro_t self);