diff --git a/scripts/wk/hw/diags.py b/scripts/wk/hw/diags.py
index 5e032a41..b08bf5eb 100644
--- a/scripts/wk/hw/diags.py
+++ b/scripts/wk/hw/diags.py
@@ -352,6 +352,7 @@ def cpu_tests_end(state) -> None:
 
 def cpu_test_cooling(state, test_object, test_mode=False) -> None:
   """CPU cooling test via sensor data assessment."""
+  _ = test_mode
   LOG.info('CPU Test (Cooling)')
 
   # Bail early
@@ -516,6 +517,7 @@ def cpu_test_sysbench(state, test_object, test_mode=False) -> None:
 
 def disk_attribute_check(state, test_objects, test_mode=False) -> None:
   """Disk attribute check."""
+  _ = test_mode
   LOG.info('Disk Attribute Check')
   for test in test_objects:
     disk_smart_status_check(test.dev, mid_run=False)
@@ -593,6 +595,7 @@ def disk_io_benchmark(
 
 def disk_self_test(state, test_objects, test_mode=False) -> None:
   """Disk self-test if available."""
+  _ = test_mode
   LOG.info('Disk Self-Test(s)')
   aborted = False
   threads = []