diff --git a/src/main/java/com/deepdirect/deepwebide_be/chat/dto/response/ChatMessageResponse.java b/src/main/java/com/deepdirect/deepwebide_be/chat/dto/response/ChatMessageResponse.java
index 87221b3..80396a4 100644
--- a/src/main/java/com/deepdirect/deepwebide_be/chat/dto/response/ChatMessageResponse.java
+++ b/src/main/java/com/deepdirect/deepwebide_be/chat/dto/response/ChatMessageResponse.java
@@ -29,8 +29,8 @@ public class ChatMessageResponse {
     @Schema(description = "코드 참조")
     private final CodeReferenceResponse codeReference;
 
-    @Schema(description = "내 메시지 여부", name = "IsMine")
-    private final boolean isMine;
+    @Schema(description = "내 메시지 여부")
+    private final boolean IsMine;
 
     @Schema(description = "보낸 시간", example = "2025-07-25T21:20:00Z")
     private final LocalDateTime sentAt;
diff --git a/src/main/java/com/deepdirect/deepwebide_be/chat/service/ChatMessageService.java b/src/main/java/com/deepdirect/deepwebide_be/chat/service/ChatMessageService.java
index 3433cf8..f0f0878 100644
--- a/src/main/java/com/deepdirect/deepwebide_be/chat/service/ChatMessageService.java
+++ b/src/main/java/com/deepdirect/deepwebide_be/chat/service/ChatMessageService.java
@@ -97,7 +97,7 @@ public ChatMessagesResponse getMessages(Long repositoryId, Long userId, Long bef
                         .codeReference(Optional.ofNullable(referenceMap.get(msg.getId()))
                                 .map(CodeReferenceResponse::from)
                                 .orElse(null))
-                        .isMine(msg.getSender().getId().equals(userId))
+                        .IsMine(msg.getSender().getId().equals(userId))
                         .sentAt(msg.getSentAt())
                         .build())
                 .toList();
@@ -141,7 +141,7 @@ public ChatMessageSearchResponse searchMessages(Long repositoryId, Long userId,
                         .codeReference(Optional.ofNullable(ref.get(msg.getId()))
                                 .map(CodeReferenceResponse::from)
                                 .orElse(null))
-                        .isMine(msg.getSender().getId().equals(userId))
+                        .IsMine(msg.getSender().getId().equals(userId))
                         .sentAt(msg.getSentAt())
                         .build()
         ).toList();