diff --git a/Doc/tutorial/classes.rst b/Doc/tutorial/classes.rst
index 06bdd0d..250d2a9 100644
--- a/Doc/tutorial/classes.rst
+++ b/Doc/tutorial/classes.rst
@@ -114,8 +114,8 @@
 name attempts to find the name in the namespace.
 
 Although scopes are determined statically, they are used dynamically. At any
-time during execution, there are at least three nested scopes whose namespaces
-are directly accessible:
+time during execution, At any time during execution, there are 3 or 4 nested
+scopes whose namespaces are directly accessible:
 
 * the innermost scope, which is searched first, contains the local names
 * the scopes of any enclosing functions, which are searched starting with the