diff --git a/src/bonsai/bonsai/bim/module/qto/operator.py b/src/bonsai/bonsai/bim/module/qto/operator.py
index 63d16335a1..8a996fc383 100644
--- a/src/bonsai/bonsai/bim/module/qto/operator.py
+++ b/src/bonsai/bonsai/bim/module/qto/operator.py
@@ -128,7 +128,7 @@ class CalculateSingleQuantity(bpy.types.Operator, tool.Ifc.Operator):
 
         props = context.scene.BIMQtoProperties
         elements = set()
-        for obj in context.selected_objects:
+        for obj in tool.Blender.get_selected_objects(include_active=False):
             element = tool.Ifc.get_entity(obj)
             if element:
                 elements.add(element)
diff --git a/src/bonsai/test/bim/test_feature.py b/src/bonsai/test/bim/test_feature.py
index 34484fa018..4f263f93c9 100644
--- a/src/bonsai/test/bim/test_feature.py
+++ b/src/bonsai/test/bim/test_feature.py
@@ -1097,7 +1097,7 @@ def prop_is_roughly_value(prop, value):
 def the_object_name_has_a_cartesian_point_offset_of_offset(name: str, offset: str) -> None:
     offset = replace_variables(offset)
     obj = the_object_name_exists(name)
-    props = tool.Blender.get_object_props(obj)
+    props = tool.Blender.get_object_bim_props(obj)
     assert props.blender_offset_type == "CARTESIAN_POINT"
     obj_offset = np.array(tuple(map(float, props.cartesian_point_offset.split(","))))
     offset = np.array(tuple(map(float, offset.split(","))))
diff --git a/src/ifc5d/ifc5d/qto.py b/src/ifc5d/ifc5d/qto.py
index 1c99cccc74..2206fe6a1a 100644
--- a/src/ifc5d/ifc5d/qto.py
+++ b/src/ifc5d/ifc5d/qto.py
@@ -47,10 +47,12 @@ for name in get_args(RULE_SET):
 
 
 def quantify(ifc_file: ifcopenshell.file, elements: set[ifcopenshell.entity_instance], rules: dict) -> ResultsDict:
-    """
+    """Quantify elements from a rules using preset quantification rules
+
+    Rules placed as a JSON configuration file in the ``ifc5d`` folder will be
+    autodetected and loaded with the module for convenience.
 
     :param rules: Set of rules from `ifc5d.qto.rules`.
-
     """
     results: ResultsDict = {}
     elements_by_classes: defaultdict[str, set[ifcopenshell.entity_instance]] = defaultdict(set)
@@ -59,13 +61,8 @@ def quantify(ifc_file: ifcopenshell.file, elements: set[ifcopenshell.entity_inst
 
     for calculator, queries in rules["calculators"].items():
         calculator = calculators[calculator]
-        for ifc_class, qtos in queries.items():
-            filtered_elements = set()
-            ifc_classes = [ifc_class] + ifcopenshell.util.type.get_applicable_types(ifc_class, ifc_file.schema)
-            for ifc_class in ifc_classes:
-                if ifc_class not in elements_by_classes:
-                    continue
-                filtered_elements.update(elements_by_classes[ifc_class])
+        for query, qtos in queries.items():
+            filtered_elements = ifcopenshell.util.selector.filter_elements(ifc_file, query, elements)
             if filtered_elements:
                 calculator.calculate(ifc_file, filtered_elements, qtos, results)
     return results