diff --git a/src/entities/spline.rs b/src/entities/spline.rs
index 1e2d8c62f..27d07d6a8 100644
--- a/src/entities/spline.rs
+++ b/src/entities/spline.rs
@@ -183,13 +183,13 @@ fn properties(spline: &Spline) -> Vec<PropSection> {
                     "fit_pt_z",
                     format!("{:.4}", fp0.map(|p| p.z).unwrap_or(0.0)),
                 ),
-                ro("Fit Tolerance", "fit_tolerance", String::new()),
-                ro("Start Tangent X", "start_tan_x", String::new()),
-                ro("Start Tangent Y", "start_tan_y", String::new()),
-                ro("Start Tangent Z", "start_tan_z", String::new()),
-                ro("End Tangent X", "end_tan_x", String::new()),
-                ro("End Tangent Y", "end_tan_y", String::new()),
-                ro("End Tangent Z", "end_tan_z", String::new()),
+                ro("Fit Tolerance", "fit_tolerance", format!("{:.6}", spline.fit_tolerance)),
+                ro("Start Tangent X", "start_tan_x", format!("{:.4}", spline.begin_tangent.x)),
+                ro("Start Tangent Y", "start_tan_y", format!("{:.4}", spline.begin_tangent.y)),
+                ro("Start Tangent Z", "start_tan_z", format!("{:.4}", spline.begin_tangent.z)),
+                ro("End Tangent X", "end_tan_x", format!("{:.4}", spline.end_tangent.x)),
+                ro("End Tangent Y", "end_tan_y", format!("{:.4}", spline.end_tangent.y)),
+                ro("End Tangent Z", "end_tan_z", format!("{:.4}", spline.end_tangent.z)),
             ],
         },
         PropSection {