--- a/video/sdl_v.c	Sat Aug 19 09:31:22 2006 +0000
+++ b/video/sdl_v.c	Sat Aug 19 10:00:30 2006 +0000
@@ -13,6 +13,7 @@
 #include "../window.h"
 #include "../network.h"
 #include "../variables.h"
+#include "../genworld.h"
 #include "sdl_v.h"
 #include <SDL.h>
 
@@ -461,7 +462,7 @@
 		if (keys[SDLK_TAB])
 #endif
 		{
-			if (!_networking && _game_mode != GM_MENU) _fast_forward |= 2;
+			if (!_networking && _game_mode != GM_MENU && !IsGeneratingWorld()) _fast_forward |= 2;
 		} else if (_fast_forward & 2) {
 			_fast_forward = 0;
 		}