diff --git a/odxtools/dtcdop.py b/odxtools/dtcdop.py
index 0fd6cc2a..2f0eb06d 100644
--- a/odxtools/dtcdop.py
+++ b/odxtools/dtcdop.py
@@ -120,6 +120,7 @@ def decode_from_pdu(self, decode_state: DecodeState) -> ParameterValue:
         return DiagnosticTroubleCode(
             trouble_code=trouble_code,
             odx_id=cast(OdxLinkId, None),
+            oid=None,
             short_name=f'DTC_{trouble_code:06x}',
             long_name=None,
             description=None,
diff --git a/odxtools/dyndefinedspec.py b/odxtools/dyndefinedspec.py
index e1e34637..d32b7077 100644
--- a/odxtools/dyndefinedspec.py
+++ b/odxtools/dyndefinedspec.py
@@ -163,8 +163,6 @@ def from_et(et_element: ElementTree.Element,
     def _build_odxlinks(self) -> Dict[OdxLinkId, Any]:
         result: Dict[OdxLinkId, Any] = {}
 
-        result.update(self._build_odxlinks())
-
         for didmi in self.dyn_id_def_mode_infos:
             result.update(didmi._build_odxlinks())