diff --git a/qermit/noise_model/transpiler_backend.py b/qermit/noise_model/transpiler_backend.py
index 7b46420b..5178d52d 100644
--- a/qermit/noise_model/transpiler_backend.py
+++ b/qermit/noise_model/transpiler_backend.py
@@ -23,7 +23,7 @@ class TranspilerBackend:
             shot batch size permitted.
         result_dict: A dictionary mapping handles to results.
         backend: Backend used to simulate compiled circuits.
-        n_cores: The number of cores when simulating shots in parallel.
+        n_cores: The number of cores used when simulating shots in parallel.
     """
 
     transpiler: BasePass
diff --git a/tests/test_requirements.txt b/tests/test_requirements.txt
index 1b3dcea9..52fb17f4 100644
--- a/tests/test_requirements.txt
+++ b/tests/test_requirements.txt
@@ -1,5 +1,4 @@
 pytket-qiskit
-qiskit-ibmq-provider
 pytest
 pytest-cov
 flake8