diff --git a/test/bytecode_3.5/15_for_if.pyc b/test/bytecode_3.5/15_for_if.pyc
new file mode 100644
index 00000000..db56a5a8
Binary files /dev/null and b/test/bytecode_3.5/15_for_if.pyc differ
diff --git a/uncompyle6/parsers/parse3.py b/uncompyle6/parsers/parse3.py
index 0e509b2d..4a21200c 100644
--- a/uncompyle6/parsers/parse3.py
+++ b/uncompyle6/parsers/parse3.py
@@ -274,6 +274,8 @@ class Python3Parser(PythonParser):
 
         _ifstmts_jump ::= return_if_stmts
         _ifstmts_jump ::= c_stmts_opt JUMP_FORWARD _come_from _come_from
+
+        # FIXME: this optimization is only used in Python 3.5 and beyond
         _ifstmts_jump ::= c_stmts_opt
 
         iflaststmt ::= testexpr c_stmts_opt JUMP_ABSOLUTE