diff --git a/extractOptionsFromScript.js b/extractOptionsFromScript.js
index 493dba8..0c376ff 100644
--- a/extractOptionsFromScript.js
+++ b/extractOptionsFromScript.js
@@ -81,7 +81,16 @@ function extractOptionsFromScript(window, optsArgs = {
   // const DATA_PREVENT_INIT_TRANSLATION = "data-prevent-init-translation" // default: false
   // const preventInitialTranslation = window.translationScriptTag.getAttribute(DATA_PREVENT_INIT_TRANSLATION) == "true";
 
-  const customLinksAttribute = window.translationScriptTag.getAttribute(DATA_CUSTOM_LINKS);
+  const DATA_ACTIVE_SUBDOMAIN = "data-active-subdomain"; // default: undefined
+  const activeSubdomain = window.translationScriptTag.getAttribute(DATA_ACTIVE_SUBDOMAIN);
+
+  // prevent initial translation for subdomain (but allow translation on dynamic content)
+  if (activeSubdomain) {
+    window.preventInitialTranslation = true;
+    window.activeSubdomain = activeSubdomain;
+  }
+
+  const customLinksAttribute = window.translationScriptTag.getAttribute(`${DATA_CUSTOM_LINKS}-${activeSubdomain}`);
   let customLinks = {};
   try {
     // format: [oldUrl,newUrl], [oldUrl,newUrl]
@@ -96,15 +105,6 @@ function extractOptionsFromScript(window, optsArgs = {
     customLinks = {};
   }
 
-  const DATA_ACTIVE_SUBDOMAIN = "data-active-subdomain"; // default: undefined
-  const activeSubdomain = window.translationScriptTag.getAttribute(DATA_ACTIVE_SUBDOMAIN);
-
-  // prevent initial translation for subdomain (but allow translation on dynamic content)
-  if (activeSubdomain) {
-    window.preventInitialTranslation = true;
-    window.activeSubdomain = activeSubdomain;
-  }
-
   // FEATURE: Prevent Google Translate from translating the page
   // Set the 'translate' attribute of the HTML tag to 'no'
   window.document.documentElement.setAttribute('translate', 'no');