diff --git a/omnibot/bot.py b/omnibot/bot.py
index 123145b..450447b 100644
--- a/omnibot/bot.py
+++ b/omnibot/bot.py
@@ -193,7 +193,7 @@ class Bot:
         if who.nick == self.server_config.nick:
             # Don't raise on_message events for ourselves
             return
-        if len(message.paremeters) == 1:
+        if len(message.parameters) == 1:
             return
         line = message.parameters[1]