diff --git a/src/ndi/time/syncrule_base.py b/src/ndi/time/syncrule_base.py
index be9ed16..5f968d6 100644
--- a/src/ndi/time/syncrule_base.py
+++ b/src/ndi/time/syncrule_base.py
@@ -231,9 +231,12 @@ def from_document(cls, session: Any, doc: ndi_document) -> ndi_time_syncrule:
         Returns:
             ndi_time_syncrule instance of the appropriate subclass
         """
-        # Get class name from document
+        # Get class name from document and normalize to Python-style
+        from ..util.classname import ndi_python_classname
+
         props = doc.document_properties
-        class_name = props.get("syncrule", {}).get("ndi_syncrule_class", "ndi_time_syncrule")
+        class_name_raw = props.get("syncrule", {}).get("ndi_syncrule_class", "ndi_time_syncrule")
+        class_name = ndi_python_classname(class_name_raw)
         parameters = props.get("syncrule", {}).get("parameters", {})
         identifier = props.get("base", {}).get("id")