diff --git a/src/Http/Response.php b/src/Http/Response.php
index 81e8abf5213..633e9bdba69 100644
--- a/src/Http/Response.php
+++ b/src/Http/Response.php
@@ -2427,4 +2427,4 @@ public function __debugInfo()
 }
 
 // Ensure backwards compat alias exists.
-class_alias('Cake\Http\Response', 'Cake\Network\Response');
+class_exists('Cake\Network\Response');
diff --git a/src/Http/ServerRequest.php b/src/Http/ServerRequest.php
index 3c0d3a52e2f..ad955388993 100644
--- a/src/Http/ServerRequest.php
+++ b/src/Http/ServerRequest.php
@@ -2131,4 +2131,4 @@ public function offsetUnset($name)
 }
 
 // Ensure backwards compat alias exists.
-class_alias('Cake\Http\ServerRequest', 'Cake\Network\Request');
+class_exists('Cake\Network\Request');