diff --git a/crates/fj-core/src/geometry/boundary/multiple.rs b/crates/fj-core/src/geometry/boundary/multiple.rs
index db5a5b83c..5ef26469a 100644
--- a/crates/fj-core/src/geometry/boundary/multiple.rs
+++ b/crates/fj-core/src/geometry/boundary/multiple.rs
@@ -70,7 +70,7 @@ impl<T: CurveBoundariesPayload> Default for CurveBoundaries<T> {
 }
 
 /// A payload that can be used in [`CurveBoundaries`]
-pub trait CurveBoundariesPayload {
+pub trait CurveBoundariesPayload: Clone + Ord {
     /// Reverse the orientation of the payload
     fn reverse(&mut self);