diff --git a/lnbits/extensions/watchonly/static/components/serial-signer/serial-signer.html b/lnbits/extensions/watchonly/static/components/serial-signer/serial-signer.html
index 9304dbcf5..357e98d70 100644
--- a/lnbits/extensions/watchonly/static/components/serial-signer/serial-signer.html
+++ b/lnbits/extensions/watchonly/static/components/serial-signer/serial-signer.html
@@ -4,7 +4,7 @@
     unelevated
     color="primary"
     icon="usb"
-    :text-color="selectedPort ? 'orange' : 'white'"
+    :text-color="selectedPort ? hww.authenticated ? 'green' : 'orange' : 'white'"
     @click="toggleSerialPortConection"
   >
     <q-list>