diff --git a/sopel_modules/SpiceBot/Database.py b/sopel_modules/SpiceBot/Database.py
index 42c2b80..078d3b1 100644
--- a/sopel_modules/SpiceBot/Database.py
+++ b/sopel_modules/SpiceBot/Database.py
@@ -612,6 +612,9 @@ class BotDatabase():
     def alias_nick(self, nick, alias):
         return self.db.alias_nick(nick, alias)
 
+    def unalias_nick(self, alias):
+        return self.db.unalias_nick(alias)
+
     def check_nick_id(self, nick):
         try:
             self.db.get_nick_id(nick, create=False)
diff --git a/sopel_modules/SpiceBot/Users.py b/sopel_modules/SpiceBot/Users.py
index 560596f..47e9fa4 100644
--- a/sopel_modules/SpiceBot/Users.py
+++ b/sopel_modules/SpiceBot/Users.py
@@ -240,12 +240,13 @@ class BotUsers():
         self.mark_user_offline(nick_id)
 
     def nick(self, bot, trigger):
+        oldnick = trigger.nick
         newnick = Identifier(trigger)
-        if trigger.nick == bot.nick or newnick == bot.nick:
+        if oldnick == bot.nick or newnick == bot.nick:
             return
         # alias the nick
         if not botdb.check_nick_id(newnick):
-            botdb.alias_nick(trigger.nick, newnick)
+            botdb.alias_nick(oldnick, newnick)
         # Identify
         nick_id = self.whois_ident(newnick)
         # Verify nick is in the all list