diff --git a/mailpoet/lib/Router/Endpoints/Subscription.php b/mailpoet/lib/Router/Endpoints/Subscription.php
index 5b35945038..2570a33729 100644
--- a/mailpoet/lib/Router/Endpoints/Subscription.php
+++ b/mailpoet/lib/Router/Endpoints/Subscription.php
@@ -108,7 +108,7 @@ class Subscription {
   }
 
   private function applyOneClickUnsubscribeStrategy($data): void {
-    if (!$this->wp->isSiteUsingHttps()) {
+    if (!$this->wp->wpIsSiteUrlUsingHttps()) {
       return;
     }
     $subscription = $this->initSubscriptionPage(UserSubscription\Pages::ACTION_UNSUBSCRIBE, $data);
diff --git a/mailpoet/lib/WP/Functions.php b/mailpoet/lib/WP/Functions.php
index a9169fb1e8..d587b3f9a0 100644
--- a/mailpoet/lib/WP/Functions.php
+++ b/mailpoet/lib/WP/Functions.php
@@ -848,7 +848,7 @@ class Functions {
     return is_wp_error($value);
   }
 
-  public function isSiteUsingHttps(): bool {
+  public function wpIsSiteUrlUsingHttps(): bool {
     return wp_is_site_url_using_https();
   }
 }