diff --git a/circuit_knitting/cutting/cutting_evaluation.py b/circuit_knitting/cutting/cutting_evaluation.py
index 9c0b2246f..995aed8d9 100644
--- a/circuit_knitting/cutting/cutting_evaluation.py
+++ b/circuit_knitting/cutting/cutting_evaluation.py
@@ -345,7 +345,7 @@ def _generate_cutting_experiments(
     # If the input was a single quantum circuit, return the subexperiments as a list
     subexperiments_out: list[QuantumCircuit] | dict[
         str | int, list[QuantumCircuit]
-    ] = subexperiments_dict
+    ] = dict(subexperiments_dict)
     assert isinstance(subexperiments_out, dict)
     if isinstance(circuits, QuantumCircuit):
         assert len(subexperiments_out.keys()) == 1