diff --git a/pennylane/templates/subroutines/arbitrary_unitary.py b/pennylane/templates/subroutines/arbitrary_unitary.py
index e36d212b99d..3527bc0145b 100644
--- a/pennylane/templates/subroutines/arbitrary_unitary.py
+++ b/pennylane/templates/subroutines/arbitrary_unitary.py
@@ -83,8 +83,8 @@ class ArbitraryUnitary(Operation):
     .. code-block:: python
 
         def arbitrary_nearest_neighbour_interaction(weights, wires):
-            for w in range(0, len(wires) - 1, 2):
-                ArbitraryUnitary(weights, wires=[w, w + 1])
+            for i, w in enumerate(range(0, len(wires) - 1, 2)):
+                ArbitraryUnitary(weights[i], wires=[w, w + 1])
 
     Args:
         weights (tensor_like): The angles of the Pauli word rotations, needs to have length :math:`4^n - 1`