diff --git a/tipbot/command_manager.py b/tipbot/command_manager.py
index 1ed9f20..927ef79 100644
--- a/tipbot/command_manager.py
+++ b/tipbot/command_manager.py
@@ -169,7 +169,13 @@ def OnCommand(link,cmd,check_admin,check_registered):
     else:
       c['function'](link,cmd)
   else:
-    link.send("Invalid command, try !help")
+    silent = False
+    if link.network.name in config.silent_invalid_commands:
+      if cmdname in config.silent_invalid_commands[link.network.name]:
+        log_info('silently ignoring command %s on %s' % (cmdname,link.network.name))
+        silent = True
+    if not silent:
+      link.send("Invalid command, try !help")
 
 def RunIdleFunctions(param=None):
   for f in idles:
diff --git a/tipbot/config.py b/tipbot/config.py
index de6cc41..5dc1118 100644
--- a/tipbot/config.py
+++ b/tipbot/config.py
@@ -40,6 +40,11 @@ admins = ["freenode:moneromooo", "freenode:moneromoo"]
 # list of nicks to ignore for rains - bots, trolls, etc
 no_rain_to_nicks = []
 
+# commands used by other bots, to avoid "unknown command" complaints
+silent_invalid_commands = {
+  'freenode': ['price','worth','net','pools','calc']
+}
+
 dice_edge = 0.01
 dice_max_bet = 5
 dice_min_bet = 0.001