diff --git a/src/blenderbim/blenderbim/bim/module/pset/operator.py b/src/blenderbim/blenderbim/bim/module/pset/operator.py
index a5520d3815..15cb559978 100644
--- a/src/blenderbim/blenderbim/bim/module/pset/operator.py
+++ b/src/blenderbim/blenderbim/bim/module/pset/operator.py
@@ -148,6 +148,7 @@ class EnablePsetEditing(bpy.types.Operator):
             new.is_null = data.get(prop_template.Name, None) is None
             new.is_optional = True
             new.data_type = data_type
+            new.is_uri = prop_template.PrimaryMeasureType == "IfcURIReference"
 
             if data_type == "string":
                 new.string_value = "" if new.is_null else data[prop_template.Name]