diff --git a/tests/endpoints/test_dump_qc_states.py b/tests/endpoints/test_dump_qc_states.py
index 6fef2d5..d544a7b 100644
--- a/tests/endpoints/test_dump_qc_states.py
+++ b/tests/endpoints/test_dump_qc_states.py
@@ -80,7 +80,7 @@ def test_get_qc(test_client: TestClient, load_data4well_retrieval):
     assert response.status_code == 200
     response_data = response.json()
     assert len(response_data) == 18
-    assert sum([len(l) for (id, l) in response_data.items()]) == 34
+    assert sum([len(l) for l in response_data.values()]) == 34
 
     response = test_client.get(
         f"/products/qc?weeks={num_weeks}&final=false&seq_level=no"
@@ -88,13 +88,13 @@ def test_get_qc(test_client: TestClient, load_data4well_retrieval):
     assert response.status_code == 200
     response_data = response.json()
     assert len(response_data) == 18
-    assert sum([len(l) for (id, l) in response_data.items()]) == 34
+    assert sum([len(l) for l in response_data.values()]) == 34
 
     response = test_client.get(f"/products/qc?weeks={num_weeks}&final=true")
     assert response.status_code == 200
     response_data = response.json()
     assert len(response_data) == 4
-    assert sum([len(l) for (id, l) in response_data.items()]) == 8
+    assert sum([len(l) for l in response_data.values()]) == 8
 
     response = test_client.get(
         f"/products/qc?weeks={num_weeks}&final=True&seq_level=yes"
@@ -102,7 +102,7 @@ def test_get_qc(test_client: TestClient, load_data4well_retrieval):
     assert response.status_code == 200
     response_data = response.json()
     assert len(response_data) == 4
-    assert sum([len(l) for (id, l) in response_data.items()]) == 4
+    assert sum([len(l) for l in response_data.values()]) == 4
     product_id = "5e91b9246b30c2df4e9f2a2313ce097e93493b0a822e9d9338e32df5d58db585"
     assert product_id in response_data
     qc_state = response_data[product_id][0]
diff --git a/tests/test_qc_state_retrieval.py b/tests/test_qc_state_retrieval.py
index 505d80b..c572225 100644
--- a/tests/test_qc_state_retrieval.py
+++ b/tests/test_qc_state_retrieval.py
@@ -89,14 +89,14 @@ def test_bulk_retrieval(qcdb_test_session, load_data4well_retrieval):
     min_num_weeks = int(min_interval.days / 7 - 1)
 
     assert min_num_weeks > 2
-    # Set the look-back number of weeks to teh period with no records.
+    # Set the look-back number of weeks to the period with no records.
     qc_states_dict = get_qc_states(qcdb_test_session, num_weeks=(min_num_weeks - 1))
     assert len(qc_states_dict) == 0
 
     # Retrieve all available QC states.
     qc_states_dict = get_qc_states(qcdb_test_session, num_weeks=max_num_weeks)
     # Test total number of QcState objects.
-    assert sum([len(l) for (id, l) in qc_states_dict.items()]) == len(qc_states)
+    assert sum([len(l) for l in qc_states_dict.values()]) == len(qc_states)
     # Test number of items in the dictionary.
     assert len(qc_states_dict) == len(
         {qc_state.id_seq_product: 1 for qc_state in qc_states}
@@ -106,7 +106,7 @@ def test_bulk_retrieval(qcdb_test_session, load_data4well_retrieval):
     qc_states_dict = get_qc_states(
         qcdb_test_session, num_weeks=max_num_weeks, final_only=True
     )
-    assert sum([len(l) for (id, l) in qc_states_dict.items()]) == len(
+    assert sum([len(l) for l in qc_states_dict.values()]) == len(
         [qc_state for qc_state in qc_states if qc_state.is_preliminary == 0]
     )
     assert {id: len(l) for (id, l) in qc_states_dict.items()} == {