diff --git a/src/ifcopenshell-python/ifcopenshell/api/georeference/edit_georeferencing.py b/src/ifcopenshell-python/ifcopenshell/api/georeference/edit_georeferencing.py
index f896898e05..af967e3a79 100644
--- a/src/ifcopenshell-python/ifcopenshell/api/georeference/edit_georeferencing.py
+++ b/src/ifcopenshell-python/ifcopenshell/api/georeference/edit_georeferencing.py
@@ -46,6 +46,8 @@ def edit_georeferencing(
 
     :param coordinate_operation: The dictionary of attribute names and values
         you want to edit.
+        'MapUnit' attribute in IFC2X3 should be presented as a full unit name (string),
+        in other IFC versions it's presented an IfcNamedUnit.
     :param projected_crs: The IfcProjectedCRS dictionary of attribute
         names and values you want to edit.