PySequence_In() -> PySequence_Contains().
diff --git a/Modules/operator.c b/Modules/operator.c
index 4e9111d..44b44f9 100644
--- a/Modules/operator.c
+++ b/Modules/operator.c
@@ -131,7 +131,7 @@
spami(isSequenceType , PySequence_Check)
spam2(op_concat , PySequence_Concat)
spamoi(op_repeat , PySequence_Repeat)
-spami2(sequenceIncludes, PySequence_In)
+spami2(sequenceIncludes, PySequence_Contains)
spami2(indexOf , PySequence_Index)
spami2(countOf , PySequence_Count)
spami(isMappingType , PyMapping_Check)