diff --git a/src-python/webui_controller.py b/src-python/webui_controller.py
index 619a24c2..61db6aec 100644
--- a/src-python/webui_controller.py
+++ b/src-python/webui_controller.py
@@ -297,7 +297,7 @@ def replaceExclamationsWithRandom(text):
     def replace(match):
         original = match.group(1)
         nonlocal num
-        rand_value = hex(num)
+        rand_value = f" <$ {hex(num)}> "
         replacement_dict[rand_value] = original
         num += 1
         return str(rand_value)
@@ -311,7 +311,7 @@ def restoreText(escaped_text, escape_dict):
     # 大文字小文字を無視して置換するために、正規表現を使う
     for escape_seq, char in escape_dict.items():
         # escape_seq の部分を case-insensitive で置換
-        escaped_text = re.sub(re.escape(escape_seq), char, escaped_text, flags=re.IGNORECASE)
+        escaped_text = re.sub(re.escape(escape_seq[1:-1]), char, escaped_text, flags=re.IGNORECASE)
     return escaped_text
 
 def removeExclamations(text):