--- a/src/newgrf_industries.h	Wed Jun 27 23:40:21 2007 +0000
+++ b/src/newgrf_industries.h	Thu Jun 28 02:14:40 2007 +0000
@@ -10,7 +10,7 @@
 
 /* in newgrf_industry.cpp */
 uint32 IndustryGetVariable(const ResolverObject *object, byte variable, byte parameter, bool *available);
-uint16 GetIndustryCallback(uint16 callback, uint32 param1, uint32 param2, Industry *industry, TileIndex tile);
+uint16 GetIndustryCallback(uint16 callback, uint32 param1, uint32 param2, Industry *industry, IndustryType type, TileIndex tile);
 uint32 GetIndustryIDAtOffset(TileIndex new_tile, TileIndex old_tile, const Industry *i);
 
 /* in newgrf_industrytiles.cpp*/