diff --git a/src/app/command_driver.rs b/src/app/command_driver.rs
index d8a2f787a..d483d8b13 100644
--- a/src/app/command_driver.rs
+++ b/src/app/command_driver.rs
@@ -3318,6 +3318,31 @@ impl OpenCADStudio {
                     }
                 };
             }
+            CmdResult::CheckHorizontalPoint { kind, pick } => {
+                use crate::modules::parametric::HorizontalConstraintCommand;
+                use crate::scene::parametric_constraints::nearest_parametric_point;
+
+                // The reference rejects a missed first point right away and
+                // asks for it again; a hit moves on to the second point.
+                let scope = self.tabs[i].current_parametric_scope();
+                let found = nearest_parametric_point(
+                    &self.tabs[i].scene.document,
+                    scope,
+                    acadrust::types::Vector3::new(pick.point.x, pick.point.y, pick.point.z),
+                    None,
+                )
+                .is_some();
+                if !found {
+                    self.command_line
+                        .push_error("No valid constraint point found.");
+                }
+                let command = HorizontalConstraintCommand::resume(kind, found.then_some(pick));
+                self.command_line
+                    .push_info(&crate::command::CadCommand::prompt(&command));
+                self.tabs[i].active_cmd = Some(Box::new(command));
+                self.tabs[i].snap_result = None;
+                return Task::none();
+            }
             CmdResult::AddHorizontalConstraint {
                 kind,
                 selection,
diff --git a/src/command.rs b/src/command.rs
index 5b3159445..74333ff0c 100644
--- a/src/command.rs
+++ b/src/command.rs
@@ -1592,6 +1592,13 @@ pub enum CmdResult {
         direction: acadrust::types::Vector3,
         label: &'static str,
     },
+    /// Resolves the first 2Points pick of a Horizontal or Vertical constraint
+    /// against the live document so a miss is reported at once, before the
+    /// second point is asked for.
+    CheckHorizontalPoint {
+        kind: crate::scene::parametric_constraints::ConstraintKind,
+        pick: CoincidentPick,
+    },
     /// Adds a point or object symmetry relation around a picked line. The
     /// first reference and axis remain fixed during initial placement.
     AddSymmetricConstraint {
diff --git a/src/modules/parametric/horizontal.rs b/src/modules/parametric/horizontal.rs
index 987cccf48..a343b476b 100644
--- a/src/modules/parametric/horizontal.rs
+++ b/src/modules/parametric/horizontal.rs
@@ -321,10 +321,12 @@ impl CadCommand for HorizontalConstraintCommand {
     fn on_point(&mut self, point: DVec3) -> CmdResult {
         let pick = Self::point_pick(None, point);
         match self.step {
-            Step::ObjectOrTwoPoints | Step::FirstPoint => {
-                self.step = Step::SecondPoint(pick);
-                CmdResult::NeedPoint
-            }
+            // The host resolves the pick against the document: a hit resumes
+            // at the second point, a miss re-asks for the first one at once.
+            Step::ObjectOrTwoPoints | Step::FirstPoint => CmdResult::CheckHorizontalPoint {
+                kind: self.kind,
+                pick,
+            },
             Step::SecondPoint(first) => self.finish_points(first, pick),
         }
     }
@@ -375,10 +377,12 @@ mod tests {
     fn enter_starts_the_two_point_flow() {
         let mut command = HorizontalConstraintCommand::new();
         assert!(matches!(command.on_enter(), CmdResult::NeedPoint));
-        assert!(matches!(
-            command.on_point(DVec3::new(1.0, 2.0, 0.0)),
-            CmdResult::NeedPoint
-        ));
+        let CmdResult::CheckHorizontalPoint { kind, pick } =
+            command.on_point(DVec3::new(1.0, 2.0, 0.0))
+        else {
+            panic!("the host must check the first point");
+        };
+        let mut command = HorizontalConstraintCommand::resume(kind, Some(pick));
         let CmdResult::AddHorizontalConstraint {
             selection: HorizontalConstraintSelection::Points(first, second),
             direction,