diff --git a/src/main/java/com/sanbosillok/sanbosillokserver/api/post/domain/Post.java b/src/main/java/com/sanbosillok/sanbosillokserver/api/post/domain/Post.java
index 7b1672e..2a11c7d 100644
--- a/src/main/java/com/sanbosillok/sanbosillokserver/api/post/domain/Post.java
+++ b/src/main/java/com/sanbosillok/sanbosillokserver/api/post/domain/Post.java
@@ -34,6 +34,10 @@ public Post(String title, String content, String lastModifier, PostStatus status
         this.status = status;
     }
 
+    public String getLastModifier() {
+        return lastModifier != null ? lastModifier : "Unknown";
+    }
+
     public void update(String content, String lastModifier) {
         this.content = content;
         this.lastModifier = lastModifier;