diff --git a/pylops/linearoperator.py b/pylops/linearoperator.py
index ce1b0202b..020b77313 100644
--- a/pylops/linearoperator.py
+++ b/pylops/linearoperator.py
@@ -1474,7 +1474,7 @@ def __init__(self, A: LinearOperator, p: int) -> None:
         self.args = (A, p)
 
     def _power(self, fun: Callable, x: NDArray) -> NDArray:
-        res = np.array(x, copy=True)
+        res = x.copy()
         for _ in range(self.args[1]):
             res = fun(res)
         return res