diff --git a/Doc/lib/libfuncs.tex b/Doc/lib/libfuncs.tex
index 0a187e2..dc52915 100644
--- a/Doc/lib/libfuncs.tex
+++ b/Doc/lib/libfuncs.tex
@@ -791,7 +791,7 @@
 
 \begin{verbatim}
 class C(object):
-    def __init__(self): self.__x = None
+    def __init__(self): self._x = None
     def getx(self): return self._x
     def setx(self, value): self._x = value
     def delx(self): del self._x