diff --git a/CHANGELOG.md b/CHANGELOG.md
index 66fbf1d..4420e55 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -15,6 +15,7 @@
 - Changed the minimum requirement of Craft to version 3.2.1.
 - Renamed “Blacklist” to “Deny List”, a list of IP addresses that will always be denied.
 - The hidden input field now has an `autocomplete` attribute set to `off`.
+- IP addresses are now stored as anonymous hash values.
 
 ### Removed
 - Removed the “Excluded URI Patterns” setting. Use the new “Exclude Controller Actions” setting instead.
diff --git a/src/services/SnaptchaService.php b/src/services/SnaptchaService.php
index bbb4cdd..991f296 100644
--- a/src/services/SnaptchaService.php
+++ b/src/services/SnaptchaService.php
@@ -217,7 +217,7 @@ public function validateField(string $value = null): bool
 
         // Delete all expired records
         SnaptchaRecord::deleteAll([
-            '<', 'timestamp', time() - ($record->expirationTime * 60)
+            '<', 'timestamp', time() - (Snaptcha::$plugin->settings->expirationTime * 60)
         ]);
 
         // Fire an after event