--- a/src/industry_cmd.cpp	Wed May 30 20:20:58 2007 +0000
+++ b/src/industry_cmd.cpp	Wed May 30 20:34:16 2007 +0000
@@ -1481,7 +1481,7 @@
 			indspec->accepts_cargo[0] == CT_INVALID &&
 			indspec->accepts_cargo[1] == CT_INVALID &&
 			indspec->accepts_cargo[2] == CT_INVALID &&
-			!(ind_spc->behaviour & INDUSTRYBEH_CUT_TREES) {
+			!(indspec->behaviour & INDUSTRYBEH_CUT_TREES)) {
 		return CMD_ERROR;
 	}