diff --git a/core/rebuild.php b/core/rebuild.php
index ee4ceb2..36da7e2 100644
--- a/core/rebuild.php
+++ b/core/rebuild.php
@@ -21,7 +21,7 @@
 chdir('..');
 
 // Clear the APCu cache to ensure APC classloader is reset.
-if (function_exists('apcu_enabled') && apcu_enabled()) {
+if (extension_loaded('apcu') && function_exists('apc_fetch')) {
   apc_clear_cache();
 }