diff --git a/src/components/SceneDesigner/OffsetLine.vue b/src/components/SceneDesigner/OffsetLine.vue
index fb302b6..62a440e 100644
--- a/src/components/SceneDesigner/OffsetLine.vue
+++ b/src/components/SceneDesigner/OffsetLine.vue
@@ -27,8 +27,8 @@ export default {
             let h = Math.sqrt(dx*dx + dy*dy);
             this.ox1 = this.x1 + this.o1 * Math.cos(a);
             this.oy1 = this.y1 + this.o1 * Math.sin(a);
-            this.ox2 = this.x1 + (h-this.o1) * Math.cos(a);
-            this.oy2 = this.y1 + (h-this.o1) * Math.sin(a);
+            this.ox2 = this.x1 + (h-this.o2) * Math.cos(a);
+            this.oy2 = this.y1 + (h-this.o2) * Math.sin(a);
         }
     }
 }