diff --git a/unittests/test_high_level_api.py b/unittests/test_high_level_api.py
index 73b2d89a1db1a101ac27ac6aa2ae5d2b0557264c..4e036ed462d8e20b8d0cc159fa4371eae19bdd91 100644
--- a/unittests/test_high_level_api.py
+++ b/unittests/test_high_level_api.py
@@ -258,5 +258,5 @@ def test_conversion_to_entity():
     rconv = convert_to_entity(obj)
     assert (rconv.get_property("ref").value.get_property("a").value
             == r.get_property("ref").value.get_property("a").value)
-    assert len(rconv.properties) == len(r.properties)
-    assert len(rconv.parents) == len(r.parents)
+    # TODO: improve compare_entities function
+    raise NotImplementedError()