diff --git a/src/features/study/group/api/group-study-types.ts b/src/features/study/group/api/group-study-types.ts
index 696da154..3f8c9d9a 100644
--- a/src/features/study/group/api/group-study-types.ts
+++ b/src/features/study/group/api/group-study-types.ts
@@ -318,7 +318,7 @@ export interface MissionProgressHistory {
 
 export interface Grade {
   id: 1 | 2 | 3 | 4 | 5 | 6 | 7;
-  code: 'A+' | 'A-' | 'B+' | 'B-' | 'C+' | 'C-' | 'F'; // e.g. "A+", "C+"
+  label: 'A+' | 'A-' | 'B+' | 'B-' | 'C+' | 'C-' | 'F'; // e.g. "A+", "C+"
   name: string; // e.g. "Great", "Cheer up"
   score: 4.5 | 4 | 3.5 | 3 | 2.5 | 2 | 0;
 }
diff --git a/src/features/study/group/channel/ui/comment.tsx b/src/features/study/group/channel/ui/comment.tsx
index 6c787f81..0f22a37f 100644
--- a/src/features/study/group/channel/ui/comment.tsx
+++ b/src/features/study/group/channel/ui/comment.tsx
@@ -237,7 +237,9 @@ export default function Comment({ data, groupStudyId, mode }: CommentProps) {
                 {dayjs(data.updatedAt).format('YYYY.MM.DD  HH:mm')}
               </span>
             </div>
-            <p className="font-designer-15r">{data.content}</p>
+            <p className="font-designer-15r break-all whitespace-pre-wrap">
+              {data.content}
+            </p>
           </div>
         )}
       </div>