diff --git a/freecad/silo_commands.py b/freecad/silo_commands.py
index 1bd06dc..a2398aa 100644
--- a/freecad/silo_commands.py
+++ b/freecad/silo_commands.py
@@ -990,8 +990,10 @@ def _check_pull_conflicts(part_number, local_path, doc=None):
     conflicts = []
 
     # Check for unsaved changes in an open document
-    if doc is not None and doc.IsModified():
-        conflicts.append("Document has unsaved local changes.")
+    if doc is not None:
+        gui_doc = FreeCADGui.getDocument(doc.Name) if doc.Name else None
+        if gui_doc and gui_doc.Modified:
+            conflicts.append("Document has unsaved local changes.")
 
     # Check local revision vs server latest
     if doc is not None: