diff --git a/src/braket/default_simulator/linalg_utils.py b/src/braket/default_simulator/linalg_utils.py
index 4ebf1c8a..d2fb9ef6 100644
--- a/src/braket/default_simulator/linalg_utils.py
+++ b/src/braket/default_simulator/linalg_utils.py
@@ -84,7 +84,7 @@ def _multiply_matrix(
     # Axes given in `operation.targets` are in the first positions.
     unused_idxs = [idx for idx in range(len(state.shape)) if idx not in targets]
     # Invert the permutation to put the indices in the correct place
-    inverse_permutation = np.argsort([*targets, * unused_idxs])
+    inverse_permutation = np.argsort([*targets, *unused_idxs])
     return np.transpose(product, inverse_permutation)