diff --git a/crates/fj-kernel/src/algorithms/transform/edge.rs b/crates/fj-kernel/src/algorithms/transform/edge.rs
index 265baa084..3a9bc69e8 100644
--- a/crates/fj-kernel/src/algorithms/transform/edge.rs
+++ b/crates/fj-kernel/src/algorithms/transform/edge.rs
@@ -32,8 +32,7 @@ impl TransformObject for PartialHalfEdge {
             .global_form()
             .into_partial()
             .transform(transform, objects)?
-            .with_curve(curve.global_form())
-            .into();
+            .with_curve(curve.global_form());
 
         Ok(Self::default()
             .with_curve(curve)
diff --git a/crates/fj-kernel/src/builder/shell.rs b/crates/fj-kernel/src/builder/shell.rs
index 59007984d..9c6d1629b 100644
--- a/crates/fj-kernel/src/builder/shell.rs
+++ b/crates/fj-kernel/src/builder/shell.rs
@@ -89,7 +89,7 @@ impl<'a> ShellBuilder<'a> {
                 .zip(&surfaces)
                 .map(|(half_edge, surface)| {
                     HalfEdge::partial()
-                        .with_global_form(Some(half_edge.global_form().clone()))
+                        .with_global_form(half_edge.global_form().clone())
                         .update_as_line_segment_from_points(
                             surface.clone(),
                             [[Z, Z], [edge_length, Z]],
@@ -252,7 +252,7 @@ impl<'a> ShellBuilder<'a> {
                 edges.push(
                     HalfEdge::partial()
                         .with_vertices(vertices)
-                        .with_global_form(Some(edge.global_form().clone()))
+                        .with_global_form(edge.global_form().clone())
                         .update_as_line_segment()
                         .build(self.objects)
                         .unwrap(),
diff --git a/crates/fj-kernel/src/partial/objects/edge.rs b/crates/fj-kernel/src/partial/objects/edge.rs
index 19161235f..02c60af4b 100644
--- a/crates/fj-kernel/src/partial/objects/edge.rs
+++ b/crates/fj-kernel/src/partial/objects/edge.rs
@@ -107,11 +107,10 @@ impl PartialHalfEdge {
     /// Update the partial half-edge with the given global form
     pub fn with_global_form(
         mut self,
-        global_form: Option<impl Into<MaybePartial<GlobalEdge>>>,
+        global_form: impl Into<MaybePartial<GlobalEdge>>,
     ) -> Self {
-        if let Some(global_form) = global_form {
-            self.global_form = global_form.into();
-        }
+        self.global_form = global_form.into();
+
         self
     }