diff --git a/workflows/test_workflow.py b/workflows/test_workflow.py
index 82bf9cf..f7bead8 100644
--- a/workflows/test_workflow.py
+++ b/workflows/test_workflow.py
@@ -126,7 +126,8 @@ class TestDataFunction(workflow.Function):
         cds = dataset.CategoryDataset(ones([3, 3]))
         ds_scatter = plots.ScatterMarkerPlot(ds, ds, 'rows_0', 'rows_0', '0_1', '0_2')
         lp = plots.LineViewPlot(X,major_axis=0)
-        return [X, ds, p, ds_plot, ds_scatter, p2, cds,lp]
+        vp = plots.VennPlot()
+        return [X, ds, p, ds_plot, ds_scatter, p2, cds, lp, vp]
 
 class SelectFunction(workflow.Function):
     def __init__(self):