diff --git a/attributs.py b/attributs.py
index d3d901b..7c1e897 100644
--- a/attributs.py
+++ b/attributs.py
@@ -637,27 +637,27 @@ class generalizedTimeFormat(Attr):
     une donnée de temps suivant la RFC 4517
 
     """
-    __slots__ = ("_stamp", "_datetime",)
+    __slots__ = ("stamp", "datetime",)
     default = "19700101000000Z"
 
     def __float__(self):
-        return self._stamp
+        return self.stamp
 
     def __int__(self):
-        return int(self._stamp)
+        return int(self.stamp)
 
     def __eq__(self, othertime):
         if isinstance(othertime, generalizedTimeFormat):
-            return self._stamp == othertime._stamp
+            return self.stamp == othertime.stamp
         elif isinstance(othertime, float):
-            return self._stamp == othertime
+            return self.stamp == othertime
         elif isinstance(othertime, int):
-            return self._stamp == othertime
+            return self.stamp == othertime
         elif isinstance(othertime, unicode) or isinstance(othertime, str):
             resource = generalizedTimeFormat(othertime, conn=None, Parent=None)
-            return self._stamp == resource._stamp
+            return self.stamp == resource.stamp
         elif isinstance(othertime, datetime.datetime):
-            return self._datetime == othertime
+            return self.datetime == othertime
         else:
             return False
 
@@ -666,16 +666,16 @@ class generalizedTimeFormat(Attr):
 
     def __lt__(self, othertime):
         if isinstance(othertime, generalizedTimeFormat):
-            return self._stamp < othertime._stamp
+            return self.stamp < othertime.stamp
         elif isinstance(othertime, float):
-            return self._stamp < othertime
+            return self.stamp < othertime
         elif isinstance(othertime, int):
-            return self._stamp < othertime
+            return self.stamp < othertime
         elif isinstance(othertime, unicode) or isinstance(othertime, str):
             resource = generalizedTimeFormat(othertime, conn=None, Parent=None)
-            return self._stamp < resource._stamp
+            return self.stamp < resource.stamp
         elif isinstance(othertime, datetime.datetime):
-            return self._datetime < othertime
+            return self.datetime < othertime
         else:
             return False
 
@@ -691,21 +691,21 @@ class generalizedTimeFormat(Attr):
     def parse_value(self, gtf):
         if isinstance(gtf, str) or isinstance(gtf, unicode):
             if not ('Z' in gtf or '+' in gtf or '-' in gtf):
-                self._stamp = gtf
+                self.stamp = gtf
                 self.value = to_generalized_time_format(float(gtf))
-                self._datetime = datetime_from_generalized_time_format(self.value)
+                self.datetime = datetime_from_generalized_time_format(self.value)
             else:
-                self._stamp = from_generalized_time_format(gtf)
-                self._datetime = datetime_from_generalized_time_format(gtf)
+                self.stamp = from_generalized_time_format(gtf)
+                self.datetime = datetime_from_generalized_time_format(gtf)
                 self.value = gtf
         elif isinstance(gtf, float):
-            self._stamp = gtf
+            self.stamp = gtf
             self.value = to_generalized_time_format(gtf)
-            self._datetime = datetime_from_generalized_time_format(self.value)
+            self.datetime = datetime_from_generalized_time_format(self.value)
         elif isinstance(gtf, datetime.datetime):
-            self._datetime = gtf
+            self.datetime = gtf
             self.value = datetime_to_generalized_time_format(gtf)
-            self._stamp = from_generalized_time_format(self.value)
+            self.stamp = from_generalized_time_format(self.value)
 
 @crans_attribute
 class debutAdhesion(generalizedTimeFormat):