diff --git a/src/sdk/AuthModal.tsx b/src/sdk/AuthModal.tsx
index 34009241..ff073edd 100644
--- a/src/sdk/AuthModal.tsx
+++ b/src/sdk/AuthModal.tsx
@@ -31,12 +31,13 @@ export default function AuthModal({ isOpen, onClose }: AuthModalProps) {
         return;
       }
 
-      if (event.source !== iframeRef.current.contentWindow) {
+      const targetOrigin = IframeReference.getTargetOrigin();
+      const fromIframe = event.source === iframeRef.current.contentWindow;
+      const sameOrigin = event.origin === targetOrigin;
+      if (!fromIframe && !sameOrigin) {
         console.error('[AuthModal] handleMessage: source not match');
         return;
       }
-
-      const targetOrigin = IframeReference.getTargetOrigin();
       if (!targetOrigin) {
         console.error('[AuthModal] handleMessage: targetOrigin not found');
         return;