diff --git a/src/mygrad/operation_base.py b/src/mygrad/operation_base.py
index 84a8fa4d..30ed4f5c 100644
--- a/src/mygrad/operation_base.py
+++ b/src/mygrad/operation_base.py
@@ -101,7 +101,7 @@ def grad_post_process_fn(
             if NP_IS_V2:
                 out = np.asarray(out)
             else:  # pragma: no cover
-                np.array(out, copy=False)
+                out = np.array(out, copy=False)
         return out
 
     @abstractmethod