diff --git a/crates/fj-core/src/operations/update/shell.rs b/crates/fj-core/src/operations/update/shell.rs
index e39fa92a5..7b19737ee 100644
--- a/crates/fj-core/src/operations/update/shell.rs
+++ b/crates/fj-core/src/operations/update/shell.rs
@@ -79,7 +79,7 @@ impl UpdateShell for Shell {
         let faces = self
             .faces()
             .iter()
-            .filter(|face| face.id() == handle.id())
+            .filter(|face| face.id() != handle.id())
             .cloned();
 
         Shell::new(faces)