diff --git a/litecord/schemas.py b/litecord/schemas.py
index 96cbe97..5a608b3 100644
--- a/litecord/schemas.py
+++ b/litecord/schemas.py
@@ -159,7 +159,7 @@ class LitecordValidator(Validator):
     def _validate_type_channel_name(self, value: str) -> bool:
         # for now, we'll use the same validation for guild_name
         if value.endswith("-"):
-            value[-1] = ""
+            value = value[:-1]
         return self._validate_type_guild_name(value)
 
     def _validate_type_theme(self, value: str) -> bool: