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diff --git a/test/bytecode_3.6_run/01_triple_compare.pyc b/test/bytecode_3.6_run/01_triple_compare.pyc
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diff --git a/test/simple_source/bug33/01_triple_compare.py b/test/simple_source/bug33/01_triple_compare.py
index 3efe6bef..6878e042 100644
--- a/test/simple_source/bug33/01_triple_compare.py
+++ b/test/simple_source/bug33/01_triple_compare.py
@@ -1,8 +1,11 @@
 # In Python 3.3+ this uses grammar rule
 # compare_chained2 ::= expr COMPARE_OP RETURN_VALUE
+# In Python 3.6 uses this uses grammar rule
+# compare_chained2 ::= expr COMPARE_OP come_froms JUMP_FORWARD
 
 # Seen in Python 3.3 ipaddress.py
 
+# RUNNABLE!
 def _is_valid_netmask(netmask):
     return 0 <= netmask <= 10
 
@@ -10,4 +13,4 @@ def _is_valid_netmask(netmask):
 # detections
 
 # See in 2.6.9 quopri.py ishex():
-'0' <= __file__ <= '9' or 'a' <= __file__ <= 'f' or 'A' <= __file__ <= 'F'
+assert not '0' <= __file__ <= '9' or 'a' <= __file__ <= 'f' or 'A' <= __file__ <= 'F'
diff --git a/uncompyle6/parsers/parse36.py b/uncompyle6/parsers/parse36.py
index f702f012..0117c24e 100644
--- a/uncompyle6/parsers/parse36.py
+++ b/uncompyle6/parsers/parse36.py
@@ -133,6 +133,8 @@ class Python36Parser(Python35Parser):
         stmt ::= tryfinally_return_stmt
         tryfinally_return_stmt ::= SETUP_FINALLY suite_stmts_opt POP_BLOCK LOAD_CONST
                                    COME_FROM_FINALLY
+
+        compare_chained2 ::= expr COMPARE_OP come_froms JUMP_FORWARD
         """
 
     def customize_grammar_rules(self, tokens, customize):