--- a/src/newgrf.cpp	Wed Oct 17 02:46:21 2007 +0000
+++ b/src/newgrf.cpp	Wed Oct 17 02:50:18 2007 +0000
@@ -1890,7 +1890,7 @@
 
 							copy_from = (IndustryTileTable*)_origin_industry_specs[type].table[laynbr];
 							for (size = 1;; size++) {
-								if (copy_from[size - 1].ti.x == -0x80 && copy_from[size - 1].ti.y) break;
+								if (copy_from[size - 1].ti.x == -0x80 && copy_from[size - 1].ti.y == 0) break;
 							}
 							break;
 						}