diff --git a/tests/test_dyn_optiondescription.py b/tests/test_dyn_optiondescription.py
index d936874..16019fe 100644
--- a/tests/test_dyn_optiondescription.py
+++ b/tests/test_dyn_optiondescription.py
@@ -515,6 +515,8 @@ def test_dyndescription_subdyn():
     assert cfg.option('od.dod2val1.dodval1.st').type() == "string"
     assert cfg.option('od.dod2.dod').type() == "optiondescription"
     assert cfg.option('od.dod2val1.dodval1').type() == "optiondescription"
+    assert cfg.option('od.dod2.dod').group_type() == "default"
+    assert cfg.option('od.dod2val1.dodval1').group_type() == "default"
     #
     with pytest.raises(AttributeOptionError):
         cfg.option('od.dod2.dod').identifiers()
diff --git a/tiramisu/api.py b/tiramisu/api.py
index 5c5045f..4f15788 100644
--- a/tiramisu/api.py
+++ b/tiramisu/api.py
@@ -1209,7 +1209,7 @@ class TiramisuOption(
                 subconfig=sub_subconfig,
             )
 
-    @option_type("optiondescription")
+    @option_type(["optiondescription", "allow_dynoption"])
     def group_type(self):
         """Get type for an optiondescription (only for optiondescription)"""
         self._set_subconfig()