diff --git a/back/src/main/java/com/back/domain/post/comment/entity/PostComment.java b/back/src/main/java/com/back/domain/post/comment/entity/PostComment.java
index d58bb2ff..df3dab48 100644
--- a/back/src/main/java/com/back/domain/post/comment/entity/PostComment.java
+++ b/back/src/main/java/com/back/domain/post/comment/entity/PostComment.java
@@ -34,7 +34,7 @@ public Boolean isAuthor( Member member) {
     }
 
     public String getAuthorName() {
-        return member.getName();
+        return member.getNickname();
     }
 
     public Long getAuthorId() {
diff --git a/back/src/test/java/com/back/domain/post/comment/entity/PostCommentTest.java b/back/src/test/java/com/back/domain/post/comment/entity/PostCommentTest.java
index fc781b86..1df7d75a 100644
--- a/back/src/test/java/com/back/domain/post/comment/entity/PostCommentTest.java
+++ b/back/src/test/java/com/back/domain/post/comment/entity/PostCommentTest.java
@@ -231,7 +231,7 @@ void getAuthorName_success() {
             String authorName = comment.getAuthorName();
 
             // then
-            assertThat(authorName).isEqualTo("Author Name");
+            assertThat(authorName).isEqualTo("Test Nickname");
         }
     }
 
@@ -315,4 +315,4 @@ private PostComment createDefaultComment(Member member) {
                 .role(member.getRole().name())
                 .build();
     }
-}
\ No newline at end of file
+}