diff --git a/sopel_SpiceBot_Core_Prerun/__init__.py b/sopel_SpiceBot_Core_Prerun/__init__.py
index 6f6535e..64de480 100644
--- a/sopel_SpiceBot_Core_Prerun/__init__.py
+++ b/sopel_SpiceBot_Core_Prerun/__init__.py
@@ -40,6 +40,7 @@ def prerun():
                 return
 
             if comrun.is_rulematch and comrun.is_real_command:
+                bot.say("Invalid command: %s" % comrun.command["trigger_command"])
                 return
 
             print(trigger.match)