diff --git a/src/qiskit_qec/operators/pauli.py b/src/qiskit_qec/operators/pauli.py
index e1e8de87..e0a01889 100644
--- a/src/qiskit_qec/operators/pauli.py
+++ b/src/qiskit_qec/operators/pauli.py
@@ -516,8 +516,6 @@ def to_instruction(self):
             syntax=pauli_rep.PRODUCT_SYNTAX,
             qubit_order="right-to-left",
         )
-        if isinstance(phase_exp, np.ndarray):
-            phase_exp = phase_exp[0]
 
         if len(pauli) == 1:
             gate = {"I": IGate(), "X": XGate(), "Y": YGate(), "Z": ZGate()}[pauli]