--- a/src/debug.h	Fri Jul 18 22:41:08 2008 +0300
+++ b/src/debug.h	Sat Jul 19 01:38:52 2008 +0300
@@ -48,6 +48,7 @@
 	extern int _debug_sl_level;
 	extern int _debug_station_level;
 	extern int _debug_gamelog_level;
+	extern int _debug_grfdl_level;
 
 	void CDECL debug(const char *dbg, ...);
 #endif /* NO_DEBUG_MESSAGES */