diff --git a/gravity.sh b/gravity.sh
index a415aa01..34cad67d 100755
--- a/gravity.sh
+++ b/gravity.sh
@@ -549,10 +549,15 @@ parseList() {
   # define valid domain patterns
   # no need to include uppercase letters, as we convert to lowercase in gravity_ParseFileIntoDomains() already
   # adapted from https://stackoverflow.com/a/30007882
-  # supported ABP style: ||subdomain.domain.tlp^
 
-  valid_domain_pattern="([a-z0-9]([a-z0-9_-]{0,61}[a-z0-9]){0,1}\.)+[a-z0-9][a-z0-9-]{0,61}[a-z0-9]"
-  abp_domain_pattern="\|\|${valid_domain_pattern}\^"
+  TLD_pattern="[a-z0-9][a-z0-9-]{0,61}[a-z0-9]"
+  subdomain_pattern="([a-z0-9]([a-z0-9_-]{0,61}[a-z0-9]){0,1}\.)"
+
+  valid_domain_pattern="${subdomain_pattern}+${TLD_pattern}"
+
+  # supported ABP style: ||subdomain.domain.tld^
+  # ${subdomain_pattern} is optional for ABP style, allowing TLD blocking: ||tld^
+  abp_domain_pattern="\|\|${subdomain_pattern}*${TLD_pattern}\^"
 
   # A list of items of common local hostnames not to report as unusable
   # Some lists (i.e StevenBlack's) contain these as they are supposed to be used as HOST files