--- a/src/clear_cmd.cpp	Fri Dec 21 22:11:55 2007 +0000
+++ b/src/clear_cmd.cpp	Fri Dec 21 22:50:51 2007 +0000
@@ -22,6 +22,7 @@
 #include "genworld.h"
 #include "industry.h"
 #include "water_map.h"
+#include "tile_cmd.h"
 
 /*
  * In one terraforming command all four corners of a initial tile can be raised/lowered (though this is not available to the player).