diff --git a/mod_spam_filter/src/mod_spam_filter.erl b/mod_spam_filter/src/mod_spam_filter.erl
index cced436..0eba576 100644
--- a/mod_spam_filter/src/mod_spam_filter.erl
+++ b/mod_spam_filter/src/mod_spam_filter.erl
@@ -59,7 +59,6 @@
 -include("logger.hrl").
 -include("xmpp.hrl").
 
--define(SPAM_FILTER_CACHE, spam_filter_cache).
 -define(COMMAND_TIMEOUT, timer:seconds(30)).
 
 -type url() :: binary().