diff --git a/circuit_knitting/cutting/wire_cutting_transforms.py b/circuit_knitting/cutting/wire_cutting_transforms.py
index 31fb841af..22e094210 100644
--- a/circuit_knitting/cutting/wire_cutting_transforms.py
+++ b/circuit_knitting/cutting/wire_cutting_transforms.py
@@ -76,7 +76,7 @@ def _transform_cut_wires(
             mapping[gate_index[0]] += 1
         else:
             new_circuit.compose(
-                other=instructions[0],
+                other=instructions.operation,
                 qubits=[mapping[index] for index in gate_index],
                 inplace=True,
             )
diff --git a/test/utils/test_transforms.py b/test/utils/test_transforms.py
index 2ea178a92..181a7b27f 100644
--- a/test/utils/test_transforms.py
+++ b/test/utils/test_transforms.py
@@ -37,7 +37,7 @@ def prepare_hwea():
 
     # Exchange CNOTs with gates we support
     for i, gate in enumerate(circuit.data):
-        if len(gate[1]) == 2:
+        if len(gate.qubits) == 2:
             q1 = circuit.find_bit(gate.qubits[0])[0]
             q2 = circuit.find_bit(gate.qubits[1])[0]
             circuit.data[i] = CircuitInstruction(RZZGate(np.pi / 4), qubits=[q1, q2])