diff --git a/DrBotIRC.py b/DrBotIRC.py
index 73aa110..c5cfee6 100644
--- a/DrBotIRC.py
+++ b/DrBotIRC.py
@@ -188,10 +188,10 @@ class DrBotIRC(irclib.IRC):
             alias_list = self.config.options('Alias')
 
             for alias in alias_list:
-                alias_re = re.compile(alias)
+                alias_re = re.compile(alias, re.IGNORECASE)
                 if alias_re.search(what):
                     # we found an alias for our given string, doing a replace
-                    command = re.sub(alias, self.config.get('Alias', alias), what)
+                    command = re.sub(alias, self.config.get('Alias', alias), what, flags=re.IGNORECASE)
                     event.arguments()[0] = command
 
                     # now we have to check it for recursions again