diff --git a/python/obitools3/commands/test.pyx b/python/obitools3/commands/test.pyx
index 1132b49..89d9122 100644
--- a/python/obitools3/commands/test.pyx
+++ b/python/obitools3/commands/test.pyx
@@ -42,9 +42,9 @@ default_config = {
 
 
 def test_taxo(config, infos):
-    tax1 = Taxonomy.open(infos['dms'], config['obi']['taxo'], taxdump=True)
+    tax1 = Taxonomy.open_taxdump(infos['dms'], config['obi']['taxo'])
     tax1.write(TAXTEST)
-    tax2 = Taxonomy.open(infos['dms'], TAXTEST, taxdump=False)
+    tax2 = Taxonomy.open(infos['dms'], TAXTEST)
     assert len(tax1) == len(tax2), "Length of written taxonomy != length of read taxdump : "+str(len(tax2))+" != "+str(len(tax1))
     
     i = 0