diff --git a/crates/fj-kernel/src/algorithms/sweep/edge.rs b/crates/fj-kernel/src/algorithms/sweep/edge.rs
index 50c944d85..2018259de 100644
--- a/crates/fj-kernel/src/algorithms/sweep/edge.rs
+++ b/crates/fj-kernel/src/algorithms/sweep/edge.rs
@@ -208,61 +208,56 @@ mod tests {
         let face =
             (half_edge, Color::default()).sweep([0., 0., 1.], &objects)?;
 
-        let expected_face = {
-            let surface = objects.surfaces.xz_plane();
+        let expected_face =
+            {
+                let surface = objects.surfaces.xz_plane();
 
-            let bottom = HalfEdge::partial()
-                .update_as_line_segment_from_points(
-                    surface.clone(),
-                    [[0., 0.], [1., 0.]],
-                )
-                .build(&objects)?;
-            let side_up = HalfEdge::partial()
-                .with_surface(Some(surface.clone()))
-                .with_back_vertex(Some(
-                    Vertex::partial().with_surface_form(
+                let bottom = HalfEdge::partial()
+                    .update_as_line_segment_from_points(
+                        surface.clone(),
+                        [[0., 0.], [1., 0.]],
+                    )
+                    .build(&objects)?;
+                let side_up = HalfEdge::partial()
+                    .with_surface(Some(surface.clone()))
+                    .with_back_vertex(Vertex::partial().with_surface_form(
                         bottom.front().surface_form().clone(),
-                    ),
-                ))
-                .with_front_vertex(Vertex::partial().with_surface_form(
-                    SurfaceVertex::partial().with_position(Some([1., 1.])),
-                ))
-                .update_as_line_segment()
-                .build(&objects)?;
-            let top = HalfEdge::partial()
-                .with_surface(Some(surface.clone()))
-                .with_back_vertex(Some(Vertex::partial().with_surface_form(
-                    SurfaceVertex::partial().with_position(Some([0., 1.])),
-                )))
-                .with_front_vertex(
-                    Vertex::partial().with_surface_form(
+                    ))
+                    .with_front_vertex(Vertex::partial().with_surface_form(
+                        SurfaceVertex::partial().with_position(Some([1., 1.])),
+                    ))
+                    .update_as_line_segment()
+                    .build(&objects)?;
+                let top = HalfEdge::partial()
+                    .with_surface(Some(surface.clone()))
+                    .with_back_vertex(Vertex::partial().with_surface_form(
+                        SurfaceVertex::partial().with_position(Some([0., 1.])),
+                    ))
+                    .with_front_vertex(Vertex::partial().with_surface_form(
                         side_up.front().surface_form().clone(),
-                    ),
-                )
-                .update_as_line_segment()
-                .build(&objects)?
-                .reverse(&objects)?;
-            let side_down = HalfEdge::partial()
-                .with_surface(Some(surface))
-                .with_back_vertex(Some(
-                    Vertex::partial().with_surface_form(
-                        bottom.back().surface_form().clone(),
-                    ),
-                ))
-                .with_front_vertex(
-                    Vertex::partial()
-                        .with_surface_form(top.front().surface_form().clone()),
-                )
-                .update_as_line_segment()
-                .build(&objects)?
-                .reverse(&objects)?;
+                    ))
+                    .update_as_line_segment()
+                    .build(&objects)?
+                    .reverse(&objects)?;
+                let side_down =
+                    HalfEdge::partial()
+                        .with_surface(Some(surface))
+                        .with_back_vertex(Vertex::partial().with_surface_form(
+                            bottom.back().surface_form().clone(),
+                        ))
+                        .with_front_vertex(Vertex::partial().with_surface_form(
+                            top.front().surface_form().clone(),
+                        ))
+                        .update_as_line_segment()
+                        .build(&objects)?
+                        .reverse(&objects)?;
 
-            let cycle = objects
-                .cycles
-                .insert(Cycle::new([bottom, side_up, top, side_down]))?;
+                let cycle = objects
+                    .cycles
+                    .insert(Cycle::new([bottom, side_up, top, side_down]))?;
 
-            Face::builder(&objects).with_exterior(cycle).build()
-        };
+                Face::builder(&objects).with_exterior(cycle).build()
+            };
 
         assert_eq!(face, expected_face);
         Ok(())
diff --git a/crates/fj-kernel/src/partial/objects/cycle.rs b/crates/fj-kernel/src/partial/objects/cycle.rs
index aca41f414..8e3658b8e 100644
--- a/crates/fj-kernel/src/partial/objects/cycle.rs
+++ b/crates/fj-kernel/src/partial/objects/cycle.rs
@@ -118,7 +118,7 @@ impl PartialCycle {
                                 partial.with_surface_form(previous_vertex)
                             });
 
-                            half_edge.with_back_vertex(Some(back))
+                            half_edge.with_back_vertex(back)
                         })
                         .into_full(objects)?;
 
diff --git a/crates/fj-kernel/src/partial/objects/edge.rs b/crates/fj-kernel/src/partial/objects/edge.rs
index 9f1b01bc0..a3a5459ad 100644
--- a/crates/fj-kernel/src/partial/objects/edge.rs
+++ b/crates/fj-kernel/src/partial/objects/edge.rs
@@ -82,12 +82,11 @@ impl PartialHalfEdge {
     /// Update the partial half-edge with the given back vertex
     pub fn with_back_vertex(
         mut self,
-        vertex: Option<impl Into<MaybePartial<Vertex>>>,
+        vertex: impl Into<MaybePartial<Vertex>>,
     ) -> Self {
-        if let Some(vertex) = vertex {
-            let [from, _] = &mut self.vertices;
-            *from = vertex.into();
-        }
+        let [from, _] = &mut self.vertices;
+        *from = vertex.into();
+
         self
     }