diff --git a/workflow/tests/test_pool_and_psuedoreplicate.py b/workflow/tests/test_pool_and_psuedoreplicate.py
index ba5fe0f61a6db3c7fba46bf4ed9a2f147eb463ca..075160f726525e301c12455019b617b3c5d7ae35 100644
--- a/workflow/tests/test_pool_and_psuedoreplicate.py
+++ b/workflow/tests/test_pool_and_psuedoreplicate.py
@@ -63,7 +63,7 @@ def test_check_controls_single(design_experiment_3):
 
 @pytest.mark.unit
 def test_single_rep(design_experiment_2):
-    sys.argv[0](['--design', 'design_experiment_2'])
+    sys.argv[0](['--design', design_experiment_2])
     single_rep = pool_and_psuedoreplicate.main()