diff --git a/modules/MegaHAL.py b/modules/MegaHAL.py
index c7b37fd..04f7d5e 100644
--- a/modules/MegaHAL.py
+++ b/modules/MegaHAL.py
@@ -69,7 +69,8 @@ class MegaHAL(Module):
             reply = self.megahal.get_reply(line)
         elif re.search('^megahal$', line, re.IGNORECASE) is not None:
             reply = self.megahal.get_reply_nolearn('')
-        else:
+        elif replypath is not None:
+            # only learn if the command is not an internal one
             self.megahal.learn(line)
 
         self.megahal.sync()