diff --git a/crates/fj-kernel/src/builder/curve.rs b/crates/fj-kernel/src/builder/curve.rs
index 1f6dab6b3..f9e5f3c50 100644
--- a/crates/fj-kernel/src/builder/curve.rs
+++ b/crates/fj-kernel/src/builder/curve.rs
@@ -4,14 +4,6 @@ use crate::{geometry::path::SurfacePath, partial::PartialCurve};
 
 /// Builder API for [`PartialCurve`]
 pub trait CurveBuilder {
-    /// Update partial curve to be a line, from the provided points
-    ///
-    /// Returns the updated path.
-    fn update_as_line_from_points(
-        &mut self,
-        points: [impl Into<Point<2>>; 2],
-    ) -> SurfacePath;
-
     /// Update partial curve to be a line, from provided points and line coords
     ///
     /// Returns the updated path.
@@ -22,15 +14,6 @@ pub trait CurveBuilder {
 }
 
 impl CurveBuilder for PartialCurve {
-    fn update_as_line_from_points(
-        &mut self,
-        points: [impl Into<Point<2>>; 2],
-    ) -> SurfacePath {
-        let (path, _) = SurfacePath::line_from_points(points);
-        self.path = Some(path.into());
-        path
-    }
-
     fn update_as_line_from_points_with_line_coords(
         &mut self,
         points: [(impl Into<Point<1>>, impl Into<Point<2>>); 2],
diff --git a/crates/fj-kernel/src/builder/edge.rs b/crates/fj-kernel/src/builder/edge.rs
index d28e5d48e..92f8d66a3 100644
--- a/crates/fj-kernel/src/builder/edge.rs
+++ b/crates/fj-kernel/src/builder/edge.rs
@@ -181,10 +181,8 @@ impl HalfEdgeBuilder for PartialHalfEdge {
                     boundary.zip_ext(points_surface),
                 )
         } else {
-            let path = self
-                .curve
-                .write()
-                .update_as_line_from_points(points_surface);
+            let (path, _) = SurfacePath::line_from_points(points_surface);
+            self.curve.write().path = Some(path.into());
 
             for (vertex, position) in
                 self.vertices.each_mut_ext().zip_ext([0., 1.])