diff --git a/src/hooks/module/useTrestle.js b/src/hooks/module/useTrestle.js
index 643b8e03..b0ec3a31 100644
--- a/src/hooks/module/useTrestle.js
+++ b/src/hooks/module/useTrestle.js
@@ -2568,6 +2568,10 @@ export const useTrestle = () => {
   const getSameLineModules = (surface) => {
     const { direction, modules, isChidory } = surface
 
+    if (!modules || modules.length === 0) {
+      return
+    }
+
     // 같은 단에 있는 모듈들의 리스트
     let sameLineModuleList = []