diff --git a/qiskit_aer/library/save_instructions/save_data.py b/qiskit_aer/library/save_instructions/save_data.py
index 7a1b6b77b9..136d17a993 100644
--- a/qiskit_aer/library/save_instructions/save_data.py
+++ b/qiskit_aer/library/save_instructions/save_data.py
@@ -58,15 +58,6 @@ def __init__(self, name, num_qubits, label, subtype="single", params=None):
         self._label = label
         self._subtype = subtype
 
-    def assemble(self):
-        """Return the QasmQobjInstruction for the intructions."""
-        instr = super().assemble()
-        # Use same fields as Snapshot instruction
-        # so we dont need to modify QasmQobjInstruction
-        instr.snapshot_type = self._subtype
-        instr.label = self._label
-        return instr
-
     def inverse(self, annotated=False):
         """Special case. Return self."""
         return copy.copy(self)
diff --git a/qiskit_aer/noise/errors/quantum_error.py b/qiskit_aer/noise/errors/quantum_error.py
index 9d3d72e1fb..fac98c0bd7 100644
--- a/qiskit_aer/noise/errors/quantum_error.py
+++ b/qiskit_aer/noise/errors/quantum_error.py
@@ -312,9 +312,16 @@ def to_dict(self):
         for circ in self._circs:
             circ_inst = []
             for inst in circ.data:
-                qobj_inst = inst.operation.assemble()
-                qobj_inst.qubits = [circ.find_bit(q).index for q in inst.qubits]
-                circ_inst.append(qobj_inst.to_dict())
+                inst_dict = {}
+                inst_dict["name"] = inst.operation.name
+                inst_dict["qubits"] = [circ.find_bit(q).index for q in inst.qubits]
+                if inst.operation.params:
+                    inst_dict["params"] = inst.operation.params
+                if inst.operation.label:
+                    inst_dict["label"] = inst.operation.label
+                if inst.operation.condition:
+                    inst_dict["condition"] = inst.operation.condition
+                circ_inst.append(inst_dict)
             instructions.append(circ_inst)
         # Construct error dict
         error = {
diff --git a/test/terra/backends/simulator_test_case.py b/test/terra/backends/simulator_test_case.py
index c075ff0140..f83a5b2aef 100644
--- a/test/terra/backends/simulator_test_case.py
+++ b/test/terra/backends/simulator_test_case.py
@@ -19,8 +19,6 @@
 from qiskit_aer import AerSimulator
 from test.terra.common import QiskitAerTestCase
 from qiskit.circuit import QuantumCircuit
-from qiskit.compiler import assemble
-
 
 class SimulatorTestCase(QiskitAerTestCase):
     """Simulator test class"""
diff --git a/test/terra/backends/test_parameterized_circuit.py b/test/terra/backends/test_parameterized_circuit.py
index 9a9290f202..d087ef79ac 100644
--- a/test/terra/backends/test_parameterized_circuit.py
+++ b/test/terra/backends/test_parameterized_circuit.py
@@ -20,7 +20,7 @@
 
 from test.terra import common
 
-from qiskit.compiler import assemble, transpile
+from qiskit.compiler import transpile
 from qiskit.circuit import QuantumCircuit, Parameter
 from test.terra.reference.ref_save_expval import (
     save_expval_circuits,
diff --git a/test/terra/backends/test_runtime_parameterization.py b/test/terra/backends/test_runtime_parameterization.py
index 3a0ba3da3c..e1940fe727 100644
--- a/test/terra/backends/test_runtime_parameterization.py
+++ b/test/terra/backends/test_runtime_parameterization.py
@@ -22,7 +22,7 @@
 
 from test.terra import common
 
-from qiskit.compiler import assemble, transpile
+from qiskit.compiler import transpile
 from qiskit.circuit import QuantumCircuit, Parameter
 from test.terra.reference.ref_save_expval import (
     save_expval_circuits,
diff --git a/tools/verify_wheels.py b/tools/verify_wheels.py
index 7a1004b8bb..8b66788f5b 100644
--- a/tools/verify_wheels.py
+++ b/tools/verify_wheels.py
@@ -8,7 +8,7 @@
 import numpy as np
 
 from qiskit import ClassicalRegister
-from qiskit.compiler import assemble, transpile
+from qiskit.compiler import transpile
 from qiskit import QuantumCircuit
 from qiskit import QuantumRegister
 from qiskit.quantum_info import Operator, Statevector