diff --git a/src/types.ts b/src/types.ts
index b377d83..e625337 100644
--- a/src/types.ts
+++ b/src/types.ts
@@ -44,9 +44,9 @@ export default function checkDataType(format: CustomFormatT, _data: string | nul
     b: /[0-9ABCDEF]/i,
     p: /[*#]/i,
     an: /[0-9a-z]/i,
-    ans: /[0-9a-z-!$%^&*()_+|~=`{}\[\]:";'<>?,.\/ ]/i,
-    ns: /[0-9-!$%^&*()_+|~=`{}\[\]:";'<>?,.\/ ]/i,
-    s: /[-!$%^&*()_+|~=`{}\[\]:";'<>?,.\/ ]/i,
+    ans: /[0-9a-z-!@$%^&*()_+|~=`{}\[\]:";'<>?,.\/ ]/i,
+    ns: /[0-9-!@$%^&*()_+|~=`{}\[\]:";'<>?,.\/ ]/i,
+    s: /[-!@$%^&*()_+|~=`{}\[\]:";'<>?,.\/ ]/i,
     anp: /[0-9a-z*#\x20]/i,
     'x+n': /[0-9]/i,
   };