diff --git a/src/app/settings.rs b/src/app/settings.rs
index 12cf09c9d..6e075e9bb 100644
--- a/src/app/settings.rs
+++ b/src/app/settings.rs
@@ -67,7 +67,14 @@ impl Default for AutoConstrainSettings {
     fn default() -> Self {
         Self {
             priority: AutoConstraintKind::ALL.to_vec(),
-            enabled: AutoConstraintKind::ALL.to_vec(),
+            // Equal remains available in the priority list, but the reference
+            // application does not enable it in a fresh profile. Enabling it
+            // by default adds a redundant relation between equal-length line
+            // segments (including adjacent polyline segments).
+            enabled: AutoConstraintKind::ALL
+                .into_iter()
+                .filter(|kind| *kind != AutoConstraintKind::Equal)
+                .collect(),
             tangent_must_share_point: true,
             perpendicular_must_intersect: true,
             distance_tolerance: 0.05,