diff --git a/src/components/ConcernementMapItem.vue b/src/components/ConcernementMapItem.vue
index f27a0a0..2c5f55c 100644
--- a/src/components/ConcernementMapItem.vue
+++ b/src/components/ConcernementMapItem.vue
@@ -3022,7 +3022,9 @@ export default {
         x: (this.canvas.width - this.cartouch_width) / 2,
         y: this.canvas.height / 2
       };
-      this.constraint.pointA = this.pos;
+      if (this.constraint) {
+        this.constraint.pointA = this.pos;
+      }
       console.log('resetMapItemPosition', this.cartouch_width, this.pos);
       Matter.Body.setPosition(this.body, this.pos);
     },