diff --git a/index/brand.go b/index/brand.go
index 40d63f8c1..d8f8ed8f2 100644
--- a/index/brand.go
+++ b/index/brand.go
@@ -113,8 +113,10 @@ func (self *Brand) Rank() {
 
 	var list RankList
 	for k, item := range self.bitmap_cache {
-		if item.bitmap.Count() > 50 {
-			list = append(list, &Rank{&Pair{k, item.bitmap.Count()}, item.bitmap, item.category})
+		if k < 9223372036854775808 { //all demographics is greater than 2^63
+			if item.bitmap.Count() > 50 {
+				list = append(list, &Rank{&Pair{k, item.bitmap.Count()}, item.bitmap, item.category})
+			}
 		}
 	}
 	sort.Sort(list)