diff --git a/src/bonsai/bonsai/bim/module/project/operator.py b/src/bonsai/bonsai/bim/module/project/operator.py
index 92d8058c8f..2af804dbc6 100644
--- a/src/bonsai/bonsai/bim/module/project/operator.py
+++ b/src/bonsai/bonsai/bim/module/project/operator.py
@@ -593,7 +593,7 @@ class EnableEditingHeader(bpy.types.Operator):
             if len(organisation) > 1:
                 props.organisation_email = organisation[1]
 
-        props.authorisation = self.file.wrapped_data.header.file_name.authorization
+        props.authorisation = self.file.wrapped_data.header.file_name.authorization or ""
         return {"FINISHED"}