--- deliantra/server/server/commands.C	2010/04/06 22:59:28	1.65
+++ deliantra/server/server/commands.C	2010/04/10 04:54:09	1.66
@@ -196,7 +196,7 @@
           csp->func (pl, cp);
         }
       else if (!INVOKE_PLAYER (UNKNOWN_COMMAND, pl->contr, ARG_STRING (command), ARG_STRING (cp)))
-        pl->failmsg (format ("'%s' is not a valid command.", command));
+        pl->failmsgf ("'%s' is not a valid command.", command);
     }
 }