diff --git a/src/hooks/roofcover/useRoofAllocationSetting.js b/src/hooks/roofcover/useRoofAllocationSetting.js
index db39ac3a..3c4a50fd 100644
--- a/src/hooks/roofcover/useRoofAllocationSetting.js
+++ b/src/hooks/roofcover/useRoofAllocationSetting.js
@@ -364,6 +364,14 @@ export function useRoofAllocationSetting(id) {
     let result = false
 
     roofBases.forEach((roof) => {
+      const auxiliaryLines = canvas
+        .getObjects()
+        .filter((obj) => obj.name === 'auxiliaryLine' && roof.inPolygonImproved(obj.startPoint) && roof.inPolygonImproved(obj.endPoint))
+
+      auxiliaryLines.forEach((auxiliaryLine) => {
+        roof.innerLines.push(auxiliaryLine)
+      })
+
       if (roof.separatePolygon.length === 0) {
         roof.innerLines.forEach((line) => {
           if ((!line.attributes.actualSize || line.attributes?.actualSize === 0) && line.length > 1) {
diff --git a/src/hooks/usePolygon.js b/src/hooks/usePolygon.js
index 21429d66..e5c56854 100644
--- a/src/hooks/usePolygon.js
+++ b/src/hooks/usePolygon.js
@@ -765,13 +765,7 @@ export const usePolygon = () => {
   const splitPolygonWithLines = (polygon) => {
     polygon.set({ visible: false })
 
-    const auxiliaryLines = canvas
-      .getObjects()
-      .filter((obj) => obj.name === 'auxiliaryLine' && polygon.inPolygonImproved(obj.startPoint) && polygon.inPolygonImproved(obj.endPoint))
-
-    auxiliaryLines.forEach((auxiliaryLine) => {
-      polygon.innerLines.push(auxiliaryLine)
-    })
+    const auxiliaryLines = canvas.getObjects().filter((obj) => obj.name === 'auxiliaryLine')
 
     let innerLines = [...polygon.innerLines].filter((line) => line.visible)