diff --git a/doc/conf/modules.optional.conf b/doc/conf/modules.optional.conf
index 8b3715387..3c3f32e35 100644
--- a/doc/conf/modules.optional.conf
+++ b/doc/conf/modules.optional.conf
@@ -148,7 +148,7 @@ loadmodule "webserver";
 // https://www.unrealircd.org/docs/WebSocket_support
 loadmodule "websocket";
 
-// This module will detect and stop spam containing of characters of
+// This module will detect and stop spam containing characters of
 // mixed "scripts", where (for example) some characters are in
 // Latin script and other characters are in Cyrillic script.
 loadmodule "antimixedutf8";