--- a/industry_cmd.c	Tue Aug 22 21:14:45 2006 +0000
+++ b/industry_cmd.c	Tue Aug 22 21:17:19 2006 +0000
@@ -1408,7 +1408,7 @@
 
 		if (IsValidIndustry(i)) continue;
 
-		if (i->index > _total_industries) _total_industries = i->index;
+		if (i->index >= _total_industries) _total_industries = i->index + 1;
 
 		memset(i, 0, sizeof(*i));
 		i->index = index;
@@ -1974,7 +1974,7 @@
 		i = GetIndustry(index);
 		SlObject(i, _industry_desc);
 
-		if (index > _total_industries) _total_industries = index;
+		if (index >= _total_industries) _total_industries = index + 1;
 	}
 }