diff --git a/evojax/algo/crfmnes.py b/evojax/algo/crfmnes.py
index 2ff1698a..6fae3fd6 100644
--- a/evojax/algo/crfmnes.py
+++ b/evojax/algo/crfmnes.py
@@ -61,7 +61,7 @@ def ask(self) -> jnp.ndarray:
         return self.jnp_stack(self.params)
 
     def tell(self, fitness: jnp.ndarray) -> None:
-        self.crfm.tell(-jnp.array(fitness))
+        self.crfm.tell(-fitness)
         self._best_params = self.crfm.x_best
 
     @property