diff --git a/CustomBlockManagerPlugin.php b/CustomBlockManagerPlugin.php
index 103e0d7..81bbe3f 100644
--- a/CustomBlockManagerPlugin.php
+++ b/CustomBlockManagerPlugin.php
@@ -165,7 +165,3 @@ public function isSitePlugin(): bool
         return !Application::get()->getRequest()->getContext();
     }
 }
-
-if (!PKP_STRICT_MODE) {
-    class_alias('\APP\plugins\generic\customBlockManager\CustomBlockManagerPlugin', '\CustomBlockManagerPlugin');
-}
diff --git a/CustomBlockPlugin.php b/CustomBlockPlugin.php
index d9e3628..c139645 100644
--- a/CustomBlockPlugin.php
+++ b/CustomBlockPlugin.php
@@ -143,7 +143,3 @@ public function getContents($templateMgr, $request = null)
         return parent::getContents($templateMgr, $request);
     }
 }
-
-if (!PKP_STRICT_MODE) {
-    class_alias('\APP\plugins\generic\customBlockManager\CustomBlockPlugin', '\CustomBlockPlugin');
-}