diff --git a/src/hooks/useMode.js b/src/hooks/useMode.js
index 6030f43f..8eebe849 100644
--- a/src/hooks/useMode.js
+++ b/src/hooks/useMode.js
@@ -1809,6 +1809,7 @@ export function useMode() {
         const currentWall = line.currentWall
         const nextWall = line.nextWall
         const index = line.index + addPoint
+        const direction = currentWall.direction
         const xDiff = Big(currentWall.x1).minus(Big(nextWall.x1))
         const yDiff = Big(currentWall.y1).minus(Big(nextWall.y1))
         const offsetCurrentPoint = offsetPolygon[index]
@@ -1820,12 +1821,10 @@ export function useMode() {
             x: xDiff.eq(0) ? offsetCurrentPoint.x : nextWall.x1,
             y: yDiff.eq(0) ? offsetCurrentPoint.y : nextWall.y1,
           }
-          let diffOffset
-          if (nextWall.index > currentWall.index) {
-            diffOffset = Big(nextWall.attributes.offset).minus(Big(currentWall.attributes.offset)).abs()
-          } else {
-            diffOffset = Big(currentWall.attributes.offset).minus(Big(nextWall.attributes.offset))
-          }
+
+          let diffOffset = ['top', 'right'].includes(direction)
+            ? Big(nextWall.attributes.offset).minus(Big(currentWall.attributes.offset))
+            : Big(currentWall.attributes.offset).minus(Big(nextWall.attributes.offset))
 
           const offsetPoint2 = {
             x: yDiff.eq(0) ? offsetPoint1.x : Big(offsetPoint1.x).plus(diffOffset).toNumber(),