diff --git a/Doc/howto/descriptor.rst b/Doc/howto/descriptor.rst
index f6c3e473f1c36d..9d5a9ac8b718cb 100644
--- a/Doc/howto/descriptor.rst
+++ b/Doc/howto/descriptor.rst
@@ -420,7 +420,7 @@ Here are three practical data validation utilities:
 
         def validate(self, value):
             if not isinstance(value, str):
-                raise TypeError(f'Expected {value!r} to be an str')
+                raise TypeError(f'Expected {value!r} to be a str')
             if self.minsize is not None and len(value) < self.minsize:
                 raise ValueError(
                     f'Expected {value!r} to be no smaller than {self.minsize!r}'
diff --git a/Tools/peg_generator/pegen/parser_generator.py b/Tools/peg_generator/pegen/parser_generator.py
index 976f5e6e57d7c6..a4360eb86ada50 100644
--- a/Tools/peg_generator/pegen/parser_generator.py
+++ b/Tools/peg_generator/pegen/parser_generator.py
@@ -44,8 +44,7 @@
 class RuleCollectorVisitor(GrammarVisitor):
     """Visitor that invokes a provided callmaker visitor with just the NamedItem nodes"""
 
-    def __init__(self, rules: Dict[str, Rule], callmakervisitor: GrammarVisitor) -> None:
-        self.rules = rules
+    def __init__(self, callmakervisitor: GrammarVisitor) -> None:
         self.callmaker = callmakervisitor
 
     def visit_Rule(self, rule: Rule) -> None:
@@ -163,7 +162,7 @@ def collect_rules(self) -> None:
         for rule in self.all_rules.values():
             keyword_collector.visit(rule)
 
-        rule_collector = RuleCollectorVisitor(self.rules, self.callmakervisitor)
+        rule_collector = RuleCollectorVisitor(self.callmakervisitor)
         done: Set[str] = set()
         while True:
             computed_rules = list(self.all_rules)