diff --git a/tests/test_extraction.py b/tests/test_extraction.py
index ca685b3..4b474c1 100644
--- a/tests/test_extraction.py
+++ b/tests/test_extraction.py
@@ -32,13 +32,15 @@ def test_morph_features(self):
             vol=phantom, 
             mask_int=roi, 
             mask_morph=roi,
-            res=[1,1,1]
+            res=[1,1,1],
+            intensity_type="arbitrary"
         )
         morph_vol = MEDimage.biomarkers.morph.vol(
             vol=phantom, 
             mask_int=roi, 
             mask_morph=roi,
-            res=[1,1,1]
+            res=[1,1,1],
+            intensity_type="arbitrary"
         )
         assert morph_vol == morph["Fmorph_vol"]
         assert round(morph_vol, 2) == 0.83
@@ -52,6 +54,7 @@ def test_stats_features(self):
         )
         stats = MEDimage.biomarkers.stats.extract_all(
             vol=vol_int_re,
+            intensity_type="arbitrary"
         )
         kurt = MEDimage.biomarkers.stats.kurt(
             vol=vol_int_re,