diff --git a/rebuild.sh b/rebuild.sh
index f5a773a..bff2d5d 100755
--- a/rebuild.sh
+++ b/rebuild.sh
@@ -3,6 +3,7 @@ tail -n +5 /var/lib/rbldns/ahbl-rbldnsd/rhsbl.private.ahbl.org | \
 	grep '^[[:blank:]]*[^[:blank:]#;:]' |\
 	cut -d . -f 2- | \
 	egrep "^(([[:alpha:]](-?[[:alnum:]])*)\.)+[[:alpha:]]{2,}$" \
+	| grep "\S" \
 	| sort > /var/www/downloads.ahbl.org/rspamd/ahbl-badrep-domains.map
 
 for i in `ls *.map`; do