diff --git a/scripts/fuzz_opt.py b/scripts/fuzz_opt.py
index 069db3deadc..887b6abe925 100755
--- a/scripts/fuzz_opt.py
+++ b/scripts/fuzz_opt.py
@@ -1393,8 +1393,7 @@ def handle(self, wasm):
     TrapsNeverHappen(),
     CtorEval(),
     Merge(),
-    # FIXME: Re-enable after https://github.com/WebAssembly/binaryen/issues/3989
-    # RoundtripText()
+    RoundtripText()
 ]