diff --git a/qiskit_ibm_runtime/base_primitive.py b/qiskit_ibm_runtime/base_primitive.py
index 8f18c5868..798b67cf8 100644
--- a/qiskit_ibm_runtime/base_primitive.py
+++ b/qiskit_ibm_runtime/base_primitive.py
@@ -150,7 +150,7 @@ def _run_primitive(self, primitive_inputs: Dict, user_kwargs: Dict) -> RuntimeJo
             and isinstance(self._backend, IBMBackend)
             and isinstance(self._backend.service, QiskitRuntimeService)
             and hasattr(self._backend, "target")
-            and self._service._channel_strategy != 'q-ctrl'
+            and self._service._channel_strategy != "q-ctrl"
         ):
             validate_isa_circuits(primitive_inputs["circuits"], self._backend.target)
 
diff --git a/qiskit_ibm_runtime/utils/utils.py b/qiskit_ibm_runtime/utils/utils.py
index 139e5e1a7..ffbcb2044 100644
--- a/qiskit_ibm_runtime/utils/utils.py
+++ b/qiskit_ibm_runtime/utils/utils.py
@@ -17,7 +17,6 @@
 import os
 import re
 import hashlib
-import warnings
 from queue import Queue
 from threading import Condition
 from typing import List, Optional, Any, Dict, Union, Tuple, Sequence