diff --git a/maigret/checking.py b/maigret/checking.py
index bc3434f..80e34ff 100644
--- a/maigret/checking.py
+++ b/maigret/checking.py
@@ -266,7 +266,7 @@ def process_site_result(response, query_notify, logger, results_info, site: Maig
 
     if status_code and not error_text:
         error_text, site_error_text = detect_error_page(html_text, status_code, failure_errors,
-                                                        site.ignore_403)
+                                                        site.ignore403)
 
     if site.activation and html_text:
         is_need_activation = any([s for s in site.activation['marks'] if s in html_text])
diff --git a/maigret/resources/data.json b/maigret/resources/data.json
index a197370..4427495 100644
--- a/maigret/resources/data.json
+++ b/maigret/resources/data.json
@@ -1567,24 +1567,12 @@
         },
         "XSS.is": {
             "tags": [
-                "in",
+                "hacking",
                 "ru"
             ],
-            "activation": {
-                "method": "xssis",
-                "marks": [
-                    "errorHtml"
-                ],
-                "url": "https://xss.is/login/keep-alive",
-                "src": "csrf",
-                "dst": "x-guest-token"
-            },
-            "checkType": "status_code",
-            "getParams": {
-                "_xfToken": "1611179947,a2710362e45dad9aa1da381e21941a38"
-            },
+            "engine": "XenForo",
             "alexaRank": 165220,
-            "url": "https://xss.is/index.php?members/find&q={username}&_xfRequestUri=%2Fmembers%2F%3Fkey%3Dmost_messages&_xfWithData=1&_xfResponseType=json",
+            "ignore403": true,
             "urlMain": "https://xss.is",
             "usernameClaimed": "adam",
             "usernameUnclaimed": "noonewouldeverusethis7"
@@ -12129,7 +12117,7 @@
                 "us"
             ],
             "headers": {
-                "authorization": "Bearer BQCyNy7oN-nOZ-rNK_jL0R4GHS7f3uWdK8AdxZ9m-pg9dbm7t-mLNaaHCG2BpDeV4AekGfl4AscbXLMqeB4"
+                "authorization": "Bearer BQAhjPM0jv30LtMfeJXLPMYFBmAKG4RGzVUncYmOS9ufDGyNie5scjyVt8ujXA2bayqRX4f690lZUz0Kx9w"
             },
             "errors": {
                 "Spotify is currently not available in your country.": "Access denied in your country, use proxy/vpn"
@@ -13431,7 +13419,7 @@
                 "sec-ch-ua": "Google Chrome\";v=\"87\", \" Not;A Brand\";v=\"99\", \"Chromium\";v=\"87\"",
                 "authorization": "Bearer AAAAAAAAAAAAAAAAAAAAANRILgAAAAAAnNwIzUejRCOuH5E6I8xnZz4puTs%3D1Zv7ttfk8LF81IUq16cHjhLTvJu4FA33AGWWjCpTnA",
                 "user-agent": "Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_6) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/87.0.4280.88 Safari/537.36",
-                "x-guest-token": "1373570939997335554"
+                "x-guest-token": "1376173136807403521"
             },
             "errors": {
                 "Bad guest token": "x-guest-token update required"
@@ -13808,7 +13796,7 @@
                 "video"
             ],
             "headers": {
-                "Authorization": "jwt eyJ0eXAiOiJKV1QiLCJhbGciOiJIUzI1NiJ9.eyJleHAiOjE2MTYzMjE3MDAsInVzZXJfaWQiOm51bGwsImFwcF9pZCI6NTg0NzksInNjb3BlcyI6InB1YmxpYyIsInRlYW1fdXNlcl9pZCI6bnVsbH0.yS9-vO94E_Ad_e2krnmOoqXWcaLxhZSrRvjUVHkgIPk"
+                "Authorization": "jwt eyJ0eXAiOiJKV1QiLCJhbGciOiJIUzI1NiJ9.eyJleHAiOjE2MTY5NDExNDAsInVzZXJfaWQiOm51bGwsImFwcF9pZCI6NTg0NzksInNjb3BlcyI6InB1YmxpYyIsInRlYW1fdXNlcl9pZCI6bnVsbH0.ArAL1V2XErUD3C2FnZSmcj96Nc2sfG6WHbUw_AtrSqA"
             },
             "activation": {
                 "url": "https://vimeo.com/_rv/viewer",
diff --git a/maigret/sites.py b/maigret/sites.py
index 1ef5082..f52055d 100644
--- a/maigret/sites.py
+++ b/maigret/sites.py
@@ -46,7 +46,7 @@ class MaigretSite:
 
         self.disabled = False
         self.similar_search = False
-        self.ignore_403 = False
+        self.ignore403 = False
         self.tags = []
 
         self.type = 'username'
diff --git a/tests/test_utils.py b/tests/test_utils.py
index 98f63f8..6b50e1e 100644
--- a/tests/test_utils.py
+++ b/tests/test_utils.py
@@ -26,6 +26,13 @@ def test_case_convert_snake_to_title():
     assert b == 'Camel cased string'
 
 
+def test_case_convert_camel_with_digits_to_snake():
+    a = 'ignore403'
+    b = CaseConverter.camel_to_snake(a)
+
+    assert b == 'ignore403'
+
+
 def test_is_country_tag():
     assert is_country_tag('ru') == True
     assert is_country_tag('FR') == True