diff --git a/src/main/java/KGUcapstone/OutDecision/domain/post/service/PostServiceImpl.java b/src/main/java/KGUcapstone/OutDecision/domain/post/service/PostServiceImpl.java
index 802a3f9..c50e632 100644
--- a/src/main/java/KGUcapstone/OutDecision/domain/post/service/PostServiceImpl.java
+++ b/src/main/java/KGUcapstone/OutDecision/domain/post/service/PostServiceImpl.java
@@ -213,7 +213,7 @@ public boolean updatePost(Long postId, UploadPostDTO request, List<String> optio
         for (String originImageUrl : originOptionImgList) {
             boolean existsInOptionsList = optionsList.stream()
                     .anyMatch(option -> originImageUrl.equals(option.getPhotoUrl()));
-            if (!existsInOptionsList) {
+            if (!existsInOptionsList && originImageUrl != null && !originImageUrl.isEmpty()) {
                 s3Service.deleteImage(originImageUrl);
             }
         }