diff --git a/Lib/test/test_grammar.py b/Lib/test/test_grammar.py
index 89e9e67..6a9e512 100644
--- a/Lib/test/test_grammar.py
+++ b/Lib/test/test_grammar.py
@@ -260,6 +260,10 @@
 def d32v((x,)): pass
 d32v((1,))
 
+# Check ast errors in *args and *kwargs
+check_syntax("f(*g(1=2))")
+check_syntax("f(**g(1=2))")
+
 ### lambdef: 'lambda' [varargslist] ':' test
 print 'lambdef'
 l1 = lambda : 0