diff --git a/core/mocks/generated/trezorui2.pyi b/core/mocks/generated/trezorui2.pyi
index 48bdd49acc..71372985c3 100644
--- a/core/mocks/generated/trezorui2.pyi
+++ b/core/mocks/generated/trezorui2.pyi
@@ -526,6 +526,7 @@ def flow_confirm_output(
 def flow_confirm_output_contact(
     *,
     title: str,
+    subtitle: str,
     contact_label: str,
     address: str,
     amount: str,
diff --git a/core/src/apps/bitcoin/sign_message.py b/core/src/apps/bitcoin/sign_message.py
index 4083ab53ea..b589683582 100644
--- a/core/src/apps/bitcoin/sign_message.py
+++ b/core/src/apps/bitcoin/sign_message.py
@@ -44,9 +44,10 @@ async def sign_message(
     if "/" in message_decoded:
         # message will have format <label>/<npub>
         # hackathon simplification
+        label, contact_id = message_decoded.split('/')
         await confirm_new_contact(
-            label=message_decoded,
-            contact_id=address,
+            label=label,
+            contact_id=contact_id,
             account=account,
             path=path,
             chunkify=bool(msg.chunkify),