diff --git a/pywb/cdx/cdxdomainspecific.py b/pywb/cdx/cdxdomainspecific.py
index 54654b5e..556534a7 100644
--- a/pywb/cdx/cdxdomainspecific.py
+++ b/pywb/cdx/cdxdomainspecific.py
@@ -10,9 +10,11 @@ from pywb.utils.canonicalize import unsurt, UrlCanonicalizer
 
 #=================================================================
 def load_domain_specific_cdx_rules(ds_rules_file, surt_ordered):
-    #fh = pkgutil.get_data(__package__, filename)
-    #config = yaml.load(fh)
-
+    """
+    >>> (canon, fuzzy) = load_domain_specific_cdx_rules(None, True)
+    >>> canon('http://test.example.example/path/index.html?a=b&id=value&c=d')
+    'example,example,test)/path/index.html?id=value'
+    """
     canon = None
     fuzzy = None
 
@@ -128,15 +130,7 @@ class CDXDomainSpecificRule(BaseRule):
         if self.replace:
             self.replace = unsurt(self.replace)
 
-    @staticmethod
-    def load_rules(rules_config, surt_ordered=True):
-        if not rules_config:
-            return []
 
-        rules = map(StartsWithRule, rules_config)
-
-        if not surt_ordered:
-            for rule in rules:
-                rule.unsurt()
-
-        return rules
+if __name__ == "__main__":
+        import doctest
+        doctest.testmod()
diff --git a/pywb/rules.yaml b/pywb/rules.yaml
index 8927d2f1..ce9c7d81 100644
--- a/pywb/rules.yaml
+++ b/pywb/rules.yaml
@@ -37,7 +37,11 @@ rules:
     # testing rules -- not for valid domain
     #=================================================================
     # this rule block is a non-existent prefix merely for testing
-    - url_prefix: 'example,example,test)/nolocation_rewrite'
+    - url_prefix: 'example,example,test)/'
+
+      canonicalize:
+        match: '(example,example,test\)/.*?)[?].*?(id=value).*'
+        replace: '\1?\2'
 
       rewrite:
         js_rewrite_location: False