diff --git a/test_jobs/check_workflow_results.py b/test_jobs/check_workflow_results.py
index 03db786ce173e8fce4214f1ce106fa0affeb0e1a..09b07534e563c72b626e6f0fa3861a2ab045774f 100755
--- a/test_jobs/check_workflow_results.py
+++ b/test_jobs/check_workflow_results.py
@@ -56,7 +56,7 @@ def main(check, control):
             check_soltabval = check_h5[solsetname][soltabname]['val']
             control_soltabval = control_h5[solsetname][soltabname]['val']
             matching_vals = control_soltabval
-            if 'freq' in check_h5[solsetname][soltabname].keys() and args.allow-frequency-subset:
+            if 'freq' in check_h5[solsetname][soltabname].keys() and args.allow_frequency_subset:
                 check_axes = check_soltabval.attrs['AXES'].decode('utf-8').split(',')
                 freq_axis_index = check_axes.index('freq')
                 check_soltabfreq = check_h5[solsetname][soltabname]['freq'][:]