diff --git a/mattermost_bot/bot.py b/mattermost_bot/bot.py
index 26b7d69..d8ba7ce 100644
--- a/mattermost_bot/bot.py
+++ b/mattermost_bot/bot.py
@@ -92,7 +92,7 @@ def get_plugins(self, category, text):
 
 def respond_to(regexp, flags=0):
     def wrapper(func):
-        PluginsManager.commands['respond_to'][re.compile(regexp, flags)] = func
+        PluginsManager.commands['respond_to'][re.compile(regexp, flags | re.DEBUG)] = func
         logger.info(
             'registered respond_to plugin "%s" to "%s"', func.__name__, regexp)
         return func
@@ -102,7 +102,7 @@ def wrapper(func):
 
 def listen_to(regexp, flags=0):
     def wrapper(func):
-        PluginsManager.commands['listen_to'][re.compile(regexp, flags)] = func
+        PluginsManager.commands['listen_to'][re.compile(regexp, flags | re.DEBUG)] = func
         logger.info(
             'registered listen_to plugin "%s" to "%s"', func.__name__, regexp)
         return func