diff --git a/check.py b/check.py
index 577f3d4..33ba545 100755
--- a/check.py
+++ b/check.py
@@ -79,6 +79,7 @@ not_here_list = [
     "There is currently no text in this page.",
     "This page does not exist yet",
     "404 Not Found",
+    "HTTP 404",
     "500 Internal Server Error",
     "500: Internal Server Error",
     "Test Page for the Apache HTTP Server",
@@ -119,6 +120,10 @@ not_here_list = [
     "503 self-signed certificate",
     "504 Gateway Timeout",
     "<h2>Pages</h2>",
+    "The requested page could not be found",
+    "403 Forbidden",
+    "You don't have permission to access this resource.",
+    "Bad Request (400)",
 ]