diff --git a/scripts/fuzz_opt.py b/scripts/fuzz_opt.py
index 7ed03909acf..ca2afede301 100755
--- a/scripts/fuzz_opt.py
+++ b/scripts/fuzz_opt.py
@@ -2484,6 +2484,8 @@ def write_commands(commands, filename):
                          ("--abstract-type-refining",),
                          ("--cfp",),
                          ("--cfp-reftest",),
+                         ("--type-finalizing",),
+                         ("--type-unfinalizing",),
                          ("--type-ssa",),
                          ("--type-merging",),
                          ("--unsubtyping",)}