diff --git a/bot.py b/bot.py
index 741ca8b..fb582d1 100644
--- a/bot.py
+++ b/bot.py
@@ -301,7 +301,7 @@ class QBBot(slixmpp.ClientXMPP):
 
                 case "add":
                     category = tokens[2]
-                    if category not in ["all", "anime", "games", "movies", "music", "software", "tv"]:
+                    if category not in ["all", "anime", "games", "movies", "music", "software", "tv", "unknown"]:
                         message = "Please specify a category"
                     else:
                         string_start = 3