diff --git a/src/components/book/detail/BookInfo.tsx b/src/components/book/detail/BookInfo.tsx
index d106f0a5..19fd9919 100644
--- a/src/components/book/detail/BookInfo.tsx
+++ b/src/components/book/detail/BookInfo.tsx
@@ -78,7 +78,7 @@ const BookSummary = ({
   summary: string;
   bookUrl: string;
 }) => (
-  <p>
+  <p className="break-all">
     {summary}&nbsp;...&nbsp;
     {bookUrl && (
       <a target="_blank" href={bookUrl}>
diff --git a/src/components/comment/CommentList.tsx b/src/components/comment/CommentList.tsx
index 2fb4327e..b40a56d3 100644
--- a/src/components/comment/CommentList.tsx
+++ b/src/components/comment/CommentList.tsx
@@ -101,7 +101,7 @@ const Date = ({ date }: { date: string }) => (
 );
 
 const CommentContent = ({ content }: { content: string }) => (
-  <p className="text-justify font-body1-regular">{content}</p>
+  <p className="break-all text-justify font-body1-regular">{content}</p>
 );
 
 const CommentActionMenu = ({