diff --git a/src/hooks/usePolygon.js b/src/hooks/usePolygon.js
index bcaec973..39e82210 100644
--- a/src/hooks/usePolygon.js
+++ b/src/hooks/usePolygon.js
@@ -1093,14 +1093,12 @@ export const usePolygon = () => {
         })
 
         if (startFlag && endFlag) {
-          if (!representLines.includes(line)) {
+          if (!representLines.includes(line) && line.attributes.type === LINE_TYPE.WALLLINE.EAVES) {
             representLines.push(line)
           }
         }
       })
 
-      // blue로 생성된 것들은 대표라인이 될 수 없음.
-      representLines = representLines.filter((line) => line.stroke !== 'blue')
       // representLines중 가장 긴 line을 찾는다.
       representLines.forEach((line) => {
         if (!representLine) {
@@ -1111,7 +1109,21 @@ export const usePolygon = () => {
           }
         }
       })
-      const direction = polygon.direction ?? representLine?.direction
+
+      if (!representLine) {
+        representLines = representLines.filter((line) => line.stroke !== 'blue')
+        representLines.forEach((line) => {
+          if (!representLine) {
+            representLine = line
+          } else {
+            if (representLine.length < line.length) {
+              representLine = line
+            }
+          }
+        })
+      }
+
+      const direction = polygon.direction ?? representLine?.direction ?? ''
       const polygonDirection = polygon.direction
 
       switch (direction) {