diff --git a/examples/with_evox/walker2d_evox.py b/examples/with_evox/walker2d_evox.py
index 4df46f7..c7b6783 100644
--- a/examples/with_evox/walker2d_evox.py
+++ b/examples/with_evox/walker2d_evox.py
@@ -51,7 +51,6 @@ workflow = workflows.StdWorkflow(
     solution_transforms=[jax.jit(jax.vmap(evox_algorithm.transform))],
     fitness_transforms=[nan2inf],
     monitors=[monitor],
-    opt_direction="max",
 )
 
 # init the workflow