diff --git a/README.md b/README.md
index 0fd190a..2077769 100644
--- a/README.md
+++ b/README.md
@@ -72,7 +72,7 @@ import AnvilSignatureModal from '@anvilco/react-signature-modal'
 import '@anvilco/react-signature-modal/dist/styles.css'
 
 <AnvilSignatureModal
-  signURL={signURL}
+  iframeURL={etchSignURL || workflowURL}
   isOpen={isModalOpen}
   onClose={() => setIsModalOpen(false)}
   onLoad={() => setLoading(false)}