diff --git a/crates/fj-core/src/geometry/geometry.rs b/crates/fj-core/src/geometry/geometry.rs
index 4ffb21d73..9b5a199bf 100644
--- a/crates/fj-core/src/geometry/geometry.rs
+++ b/crates/fj-core/src/geometry/geometry.rs
@@ -308,7 +308,6 @@ pub enum CurveGeom2 {
 ///
 /// Surface are represented by triangle meshes, their uniform intermediate
 /// representation.
-#[derive(Clone)]
 pub struct SurfaceGeom {
     /// # The geometric representation of the surface
     pub geometry: Rc<dyn GenTriMesh>,