diff --git a/src/hooks/module/useTrestle.js b/src/hooks/module/useTrestle.js
index 71ee6123..b652492b 100644
--- a/src/hooks/module/useTrestle.js
+++ b/src/hooks/module/useTrestle.js
@@ -3291,6 +3291,7 @@ export const useTrestle = () => {
 
   // 가대 설치 완료 전,후 모든 surface의 isComplete를 변경
   const setAllModuleSurfaceIsComplete = (bool) => {
+    if (!canvas) return
     const surfaces = canvas.getObjects().filter((obj) => obj.name === POLYGON_TYPE.MODULE_SETUP_SURFACE)
     surfaces.forEach((surface) => {
       surface.isComplete = bool
@@ -3299,6 +3300,7 @@ export const useTrestle = () => {
 
   // 배치면 전체에 가대 설치 여부
   const isAllComplete = () => {
+    if (!canvas) return false
     const surfaces = canvas.getObjects().filter((obj) => obj.name === POLYGON_TYPE.MODULE_SETUP_SURFACE)
     if (surfaces.length === 0) {
       return false