--- a/src/command_func.h	Sun Jan 13 17:55:00 2008 +0000
+++ b/src/command_func.h	Sun Jan 13 21:41:24 2008 +0000
@@ -77,6 +77,7 @@
  */
 extern const char *_cmd_text;
 extern Money _additional_cash_required;
+extern StringID _error_message;
 
 /**
  * Checks if a integer value belongs to a command.