diff --git a/bot/core/handlers.py b/bot/core/handlers.py
index 503a0ff72..60d188be5 100644
--- a/bot/core/handlers.py
+++ b/bot/core/handlers.py
@@ -196,7 +196,7 @@ def add_handlers():
         TgClient.bot.add_handler(
             MessageHandler(
                 handler_func,
-                filters=command(command_name, case_sensitive=True) & (custom_filter),
+                filters=command(command_name, case_sensitive=True) & (custom_filter if custom_filter),
             ),
         )