diff --git a/README.md b/README.md
index 3fede33..334d92b 100644
--- a/README.md
+++ b/README.md
@@ -120,13 +120,13 @@ It is possible to apply custom rules to modify the response. This can be used to
 See in [ruleset.yaml](ruleset.yaml) for an example.
 
 ```yaml
-- domain: www.example.com
+- domain: example.com          # Inbcludes all subdomains
   domains:                     # Additional domains to apply the rule
-    - www.example.com
+    - www.example.de
     - www.beispiel.de
   headers:
     x-forwarded-for: none      # override X-Forwarded-For header or delete with none
-    referer: none              # override Referer header or delete with none   
+    referer: none              # override Referer header or delete with none
     user-agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/119.0.0.0 Safari/537.36
     cookie: privacy=1
   regexRules:
diff --git a/handlers/proxy.go b/handlers/proxy.go
index 67edbee..8862492 100644
--- a/handlers/proxy.go
+++ b/handlers/proxy.go
@@ -209,9 +209,11 @@ func fetchRule(domain string, path string) Rule {
 	rule := Rule{}
 	for _, rule := range rulesSet {
 		domains := rule.Domains
-		domains = append(domains, rule.Domain)
+		if rule.Domain != "" {
+			domains = append(domains, rule.Domain)
+		}
 		for _, ruleDomain := range domains {
-			if ruleDomain == domain {
+			if ruleDomain == domain || strings.HasSuffix(domain, ruleDomain) {
 				if len(rule.Paths) > 0 && !StringInSlice(path, rule.Paths) {
 					continue
 				}
diff --git a/handlers/types.go b/handlers/types.go
index eacc722..5aca088 100644
--- a/handlers/types.go
+++ b/handlers/types.go
@@ -8,7 +8,7 @@ type Regex struct {
 type RuleSet []Rule
 
 type Rule struct {
-	Domain  string   `yaml:"domain"`
+	Domain  string   `yaml:"domain,omitempty"`
 	Domains []string `yaml:"domains,omitempty"`
 	Paths   []string `yaml:"paths,omitempty"`
 	Headers struct {
diff --git a/ruleset.yaml b/ruleset.yaml
index bf8b346..1fe50e3 100644
--- a/ruleset.yaml
+++ b/ruleset.yaml
@@ -1,4 +1,4 @@
-- domain: www.example.com
+- domain: example.com
   domains: 
   - www.beispiel.de
   googleCache: true
@@ -156,9 +156,7 @@
             headimage.forEach(image => { image.style.filter = ''; });
           });
         </script>
-- domain: www.medium.com
-  domains:
-  - medium.com
+- domain: medium.com
   headers:
     referer: https://t.co/x?amp=1
     x-forwarded-for: none