diff --git a/src/ifs/ext_session_lock_v1.rs b/src/ifs/ext_session_lock_v1.rs
index 5bb3bb07..cc08e3e2 100644
--- a/src/ifs/ext_session_lock_v1.rs
+++ b/src/ifs/ext_session_lock_v1.rs
@@ -72,6 +72,7 @@ impl ExtSessionLockV1RequestHandler for ExtSessionLockV1 {
                 node.set_lock_surface(Some(new.clone()));
                 let pos = node.global.pos.get();
                 new.change_extents(pos);
+                new.surface.set_output(&node);
                 self.client.state.tree_changed();
             }
         }
diff --git a/src/ifs/wl_surface/ext_session_lock_surface_v1.rs b/src/ifs/wl_surface/ext_session_lock_surface_v1.rs
index 485a9a75..78a39db3 100644
--- a/src/ifs/wl_surface/ext_session_lock_surface_v1.rs
+++ b/src/ifs/wl_surface/ext_session_lock_surface_v1.rs
@@ -44,7 +44,7 @@ impl ExtSessionLockSurfaceV1 {
 
     pub fn change_extents(&self, rect: Rect) {
         self.send_configure(rect.width(), rect.height());
-        self.surface.set_absolute_position(rect.x1(), rect.x2());
+        self.surface.set_absolute_position(rect.x1(), rect.y1());
     }
 
     fn send_configure(&self, width: i32, height: i32) {