diff --git a/src/main/resources/static/js/api-selector.js b/src/main/resources/static/js/api-selector.js
index e96c8ee..2afbef1 100644
--- a/src/main/resources/static/js/api-selector.js
+++ b/src/main/resources/static/js/api-selector.js
@@ -22,7 +22,7 @@ document.addEventListener('DOMContentLoaded', function() {
     return; // 모듈 미사용 페이지
   }
 
-  const configuredPageSize = Number(window.API_SELECTOR_PAGE_SIZE);
+  const configuredPageSize = Number(globalThis.API_SELECTOR_PAGE_SIZE);
   const PAGE_SIZE = Number.isInteger(configuredPageSize) && configuredPageSize > 0 ? configuredPageSize : 15;
 
   // DOM Elements