diff --git a/src/commands.py b/src/commands.py
index d0924fbb7..bf7891a0c 100644
--- a/src/commands.py
+++ b/src/commands.py
@@ -578,7 +578,8 @@ def getSomething(irc, msg, args, state, errorMsg=None, p=None):
 def getSomethingNoSpaces(irc, msg, args, state, *L):
     def p(s):
         return len(s.split(None, 1)) == 1
-    getSomething(irc, msg, args, state, p=p, *L)
+    getSomething(irc, msg, args, state, p=p, errorMsg=_('You must not give a '
+            'string containing spaces as an argument.'), *L)
 
 def private(irc, msg, args, state):
     if irc.isChannel(msg.args[0]):