FOR_ITER is a jrel_op() not a plain old def_op()
diff --git a/Lib/dis.py b/Lib/dis.py
index 48ca176..6a9d5cd 100644
--- a/Lib/dis.py
+++ b/Lib/dis.py
@@ -234,7 +234,7 @@
 name_op('STORE_NAME', 90)       # Index in name list
 name_op('DELETE_NAME', 91)      # ""
 def_op('UNPACK_SEQUENCE', 92)   # Number of tuple items
-def_op('FOR_ITER', 93)
+jrel_op('FOR_ITER', 93)
 
 name_op('STORE_ATTR', 95)       # Index in name list
 name_op('DELETE_ATTR', 96)      # ""