diff --git a/src/ifcopenshell-python/test/util/test_selector.py b/src/ifcopenshell-python/test/util/test_selector.py
index 2016be15cf..ccbf60b443 100644
--- a/src/ifcopenshell-python/test/util/test_selector.py
+++ b/src/ifcopenshell-python/test/util/test_selector.py
@@ -111,6 +111,16 @@ class TestSelector(test.bootstrap.IFC4):
         assert subject.Selector.parse(self.file, '.IfcElement[Name*="Foo"]') == [element]
         assert subject.Selector.parse(self.file, '.IfcElement[Name*="oba"]') == [element]
         assert subject.Selector.parse(self.file, '.IfcElement[Name*="abc"]') == []
+
+    def test_comparing_if_value_does_not_exist(self):
+        element_1 = ifcopenshell.api.run("root.create_entity", self.file, ifc_class="IfcWall")
+        element_2 = ifcopenshell.api.run("root.create_entity", self.file, ifc_class="IfcWall")
+        pset_1 = ifcopenshell.api.run("pset.add_pset", self.file, product=element_1, name="Foo_Bar")
+        pset_2 = ifcopenshell.api.run("pset.add_pset", self.file, product=element_2, name="Foo_Bar")
+        ifcopenshell.api.run("pset.edit_pset", self.file, pset=pset_1, properties={"Foo": "Bar"})
+        ifcopenshell.api.run("pset.edit_pset", self.file, pset=pset_2, properties={"Foo": "BOO"})
+        assert subject.Selector.parse(self.file, '.IfcElement[Foo_Bar.Foo != "Bar"]') == [element_2]
+        assert subject.Selector.parse(self.file, '.IfcElement[Foo_Bar.Foo != "BOO"]') == [element_1]
         
     def test_selecting_a_property_which_includes_non_standard_characters(self):
         element = ifcopenshell.api.run("root.create_entity", self.file, ifc_class="IfcWall")