diff --git a/features/main/components/calendar/atoms/calendar-item-layout.tsx b/features/main/components/calendar/atoms/calendar-item-layout.tsx
index 898ab190..d2ceb2f8 100644
--- a/features/main/components/calendar/atoms/calendar-item-layout.tsx
+++ b/features/main/components/calendar/atoms/calendar-item-layout.tsx
@@ -47,6 +47,7 @@ const DateStyles = css({
   width: '18px',
   marginBottom: '5px',
   borderRadius: 'full',
+  wordBreak: 'keep-all',
 });
 
 const EmptyStyles = '';
diff --git a/features/main/components/calendar/molecules/calendar-header.tsx b/features/main/components/calendar/molecules/calendar-header.tsx
index eb875fde..a6aa21b2 100644
--- a/features/main/components/calendar/molecules/calendar-header.tsx
+++ b/features/main/components/calendar/molecules/calendar-header.tsx
@@ -75,4 +75,5 @@ const CurrentDateStyles = css({
   textAlign: 'center',
   textStyle: 'heading2',
   fontWeight: 'bold',
+  wordBreak: 'keep-all',
 });