diff --git a/packages/shared/useDateFormat/index.ts b/packages/shared/useDateFormat/index.ts
index 687b6b94c2c..a7ecb9fa836 100644
--- a/packages/shared/useDateFormat/index.ts
+++ b/packages/shared/useDateFormat/index.ts
@@ -66,7 +66,7 @@ export function formatDate(date: Date, formatStr: string, options: UseDateFormat
     a: () => meridiem(hours, minutes, true),
     aa: () => meridiem(hours, minutes, true, true),
   }
-  return formatStr.replace(REGEX_FORMAT, (match, $1) => $1 || matches[match]())
+  return formatStr.replace(REGEX_FORMAT, (match, $1) => $1 || matches[match]?.() || match)
 }
 
 export function normalizeDate(date: DateLike) {