diff -r 137e45f15c0b Lib/test/test_keywordonlyarg.py
--- a/Lib/test/test_keywordonlyarg.py	Thu Aug 25 18:32:02 2011 +0200
+++ b/Lib/test/test_keywordonlyarg.py	Fri Nov 04 21:44:05 2011 +0100
@@ -162,6 +162,9 @@
         self.assertEqual(Example.f(Example(), k1=1, k2=2), (1, 2))
         self.assertRaises(TypeError, Example.f, k1=1, k2=2)
 
+    def test_issue13343(self):
+        lambda *, k1=unittest: None
+
 def test_main():
     run_unittest(KeywordOnlyArgTestCase)
 
diff -r 137e45f15c0b Python/symtable.c
--- a/Python/symtable.c	Thu Aug 25 18:32:02 2011 +0200
+++ b/Python/symtable.c	Fri Nov 04 21:44:05 2011 +0100
@@ -1334,6 +1334,9 @@
             return 0;
         if (e->v.Lambda.args->defaults)
             VISIT_SEQ(st, expr, e->v.Lambda.args->defaults);
+        if (e->v.Lambda.args->kw_defaults)
+            VISIT_KWONLYDEFAULTS(st,
+                                 e->v.Lambda.args->kw_defaults);
         if (!symtable_enter_block(st, lambda,
                                   FunctionBlock, (void *)e, e->lineno,
                                   e->col_offset))