diff --git a/README.md b/README.md
index 972de3c..aa9a3c5 100644
--- a/README.md
+++ b/README.md
@@ -55,6 +55,8 @@ interact with them:
 `cloaking.get_player_by_name`.
 
 If you have made chatcommand work with players that aren't in-game, you can add
-`_allow_while_cloaked = true` to the chatcommand definition. This does not
-require that you add `cloaking` to `depends.txt`, as when cloaking is not loaded
-this parameter is simply ignored.
+`_allow_while_cloaked = true` to the chatcommand definition. If you explicitly
+don't want your chatcommand working with cloaked players, you can add
+`_disallow_while_cloaked = true` to the definition.
+These modifications do not require that you add `cloaking` to `depends.txt`, as
+when cloaking is not loaded this parameter is simply ignored.
diff --git a/core.lua b/core.lua
index 9ba4e03..6b55368 100644
--- a/core.lua
+++ b/core.lua
@@ -62,7 +62,12 @@ local override_chatcommands = function()
             local real_cmd = def.func
             minetest.chatcommands[name].func = function(name, param)
                 if cloaked_players[name] then
-                    local pass, r1, r2 = pcall(real_cmd, name, param)
+                    local pass, r1, r2
+                    if def._disallow_while_cloaked then
+                        pass = false
+                    else
+                        pass, r1, r2 = pcall(real_cmd, name, param)
+                    end
                     if pass then
                         return r1, r2
                     else
@@ -103,6 +108,15 @@ end
 
 minetest.register_on_chat_message(cloaking.on_chat_message)
 
+-- Disallow some built-in commands.
+for _, cmd in ipairs({'me', 'msg', 'tell'}) do
+    if minetest.chatcommands[cmd] then
+        minetest.override_chatcommand(cmd, {
+            _disallow_while_cloaked = true
+        })
+    end
+end
+
 -- The cloak and uncloak functions
 cloaking.cloak = function(player)
     if not chatcommands_modified then override_chatcommands() end
diff --git a/depends.txt b/depends.txt
index 5111352..d0a051b 100644
--- a/depends.txt
+++ b/depends.txt
@@ -1,4 +1,3 @@
 chat3?
 irc?
-xban?
-xban2?
+mesecons?