diff --git a/src/ifcopenshell-python/ifcopenshell/util/selector.py b/src/ifcopenshell-python/ifcopenshell/util/selector.py
index 1dcb9a0ba0..52c7176650 100644
--- a/src/ifcopenshell-python/ifcopenshell/util/selector.py
+++ b/src/ifcopenshell-python/ifcopenshell/util/selector.py
@@ -660,7 +660,7 @@ class FacetTransformer(lark.Transformer):
             containers = self.get_container_tree(container)
             result = False if containers else None
             for container in containers:
-                if self.compare(container.Name, comparison, value):
+                if self.compare(container.Name, "=", value):
                     result = True
             if result is not None:
                 return result if comparison == "=" else not result
@@ -675,7 +675,7 @@ class FacetTransformer(lark.Transformer):
             result = False
             for rel in getattr(element, "HasAssignments", []):
                 if rel.is_a("IfcRelAssignsToGroup") and rel.RelatingGroup:
-                    if self.compare(rel.RelatingGroup.Name, comparison, value):
+                    if self.compare(rel.RelatingGroup.Name, "=", value):
                         result = True
             return result if comparison == "=" else not result
 
diff --git a/src/ifcopenshell-python/test/util/test_selector.py b/src/ifcopenshell-python/test/util/test_selector.py
index efcc5dfa9c..e361833b34 100644
--- a/src/ifcopenshell-python/test/util/test_selector.py
+++ b/src/ifcopenshell-python/test/util/test_selector.py
@@ -238,6 +238,7 @@ class TestFilterElements(test.bootstrap.IFC4):
         assert subject.filter_elements(self.file, "IfcWall, classification=NULL") == {element2}
         assert subject.filter_elements(self.file, "IfcWall, classification=X") == {element}
         assert subject.filter_elements(self.file, "IfcWall, classification=Foobar") == {element}
+        assert subject.filter_elements(self.file, "IfcWall, classification!=X") == {element2}
 
     def test_selecting_by_location(self):
         element = ifcopenshell.api.run("root.create_entity", self.file, ifc_class="IfcWall")
@@ -255,6 +256,15 @@ class TestFilterElements(test.bootstrap.IFC4):
         assert subject.filter_elements(self.file, "IfcWall, location=Space") == {element}
         assert subject.filter_elements(self.file, "IfcWall, location=G") == {element, element2}
         assert subject.filter_elements(self.file, "IfcWall, location=Building") == {element, element2}
+        assert subject.filter_elements(self.file, "IfcWall, location!=Space") == {element2}
+
+    def test_selecting_by_group(self):
+        element = ifcopenshell.api.run("root.create_entity", self.file, ifc_class="IfcWall")
+        element2 = ifcopenshell.api.run("root.create_entity", self.file, ifc_class="IfcWall")
+        group = ifcopenshell.api.run("group.add_group", self.file, name="Foo")
+        ifcopenshell.api.run("group.assign_group", self.file, products=[element], group=group)
+        assert subject.filter_elements(self.file, "IfcWall, group=Foo") == {element}
+        assert subject.filter_elements(self.file, "IfcWall, group!=Foo") == {element2}
 
     def test_selecting_multiple_filter_groups(self):
         element = ifcopenshell.api.run("root.create_entity", self.file, ifc_class="IfcWall")