diff --git a/src/components/fabric/QPolygon.js b/src/components/fabric/QPolygon.js
index 0f7bd815..0ec436fe 100644
--- a/src/components/fabric/QPolygon.js
+++ b/src/components/fabric/QPolygon.js
@@ -4,7 +4,7 @@ import { QLine } from '@/components/fabric/QLine'
 import { distanceBetweenPoints, findTopTwoIndexesByDistance, getDirectionByPoint, sortedPointLessEightPoint, sortedPoints } from '@/util/canvas-util'
 import { calculateAngle, drawGabledRoof, drawRidgeRoof, drawShedRoof, inPolygon, toGeoJSON } from '@/util/qpolygon-utils'
 import * as turf from '@turf/turf'
-import { LINE_TYPE } from '@/common/common'
+import { LINE_TYPE, POLYGON_TYPE } from '@/common/common'
 
 export const QPolygon = fabric.util.createClass(fabric.Polygon, {
   type: 'QPolygon',
@@ -690,6 +690,15 @@ export const QPolygon = fabric.util.createClass(fabric.Polygon, {
 
     return intersects % 2 === 1
   },
+  containsPoint: function (point) {
+    if (this.name === POLYGON_TYPE.ROOF && this.isFixed) {
+      const isInside = this.inPolygon(point)
+      this.set('selectable', isInside)
+      return isInside
+    } else {
+      return this.callSuper('containsPoint', point)
+    }
+  },
 
   inPolygonABType(x, y, polygon) {
     let inside = false