diff --git a/lnbits/extensions/watchonly/static/components/serial-signer/serial-signer.js b/lnbits/extensions/watchonly/static/components/serial-signer/serial-signer.js
index c33a609f..8dc2b47e 100644
--- a/lnbits/extensions/watchonly/static/components/serial-signer/serial-signer.js
+++ b/lnbits/extensions/watchonly/static/components/serial-signer/serial-signer.js
@@ -112,7 +112,7 @@ async function serialSigner(path) {
 
           this.writer = textEncoder.writable.getWriter()
 
-          this.hwwPing()
+          await this.hwwPing()
 
           return true
         } catch (error) {