diff --git a/.github/workflows/CI.yml b/.github/workflows/CI.yml
index 5a6a5bd..1de2867 100644
--- a/.github/workflows/CI.yml
+++ b/.github/workflows/CI.yml
@@ -136,7 +136,7 @@ jobs:
           echo "Testing SharedArrayBuffer availability..."
           cat << EOF > debug-sab.js
           console.log('SharedArrayBuffer available:', typeof SharedArrayBuffer !== 'undefined');
-          console.log('crossOriginIsolated:', crossOriginIsolated);
+          console.log('crossOriginIsolated:', window.crossOriginIsolated);
           EOF
           node debug-sab.js