diff --git a/lnbits/extensions/copilot/lnurl.py b/lnbits/extensions/copilot/lnurl.py
index 1fa92a56f..b16f33e9e 100644
--- a/lnbits/extensions/copilot/lnurl.py
+++ b/lnbits/extensions/copilot/lnurl.py
@@ -21,7 +21,7 @@ async def lnurl_response(cp_id):
         callback=url_for("copilot.lnurl_callback", cp_id=cp_id, _external=True),
         min_sendable=10000,
         max_sendable=50000000,
-        metadata=json.dumps([["text/plain", cp.lnurl_title]]),
+        metadata=json.dumps(jsonify([["text/plain", cp.lnurl_title]])),
     )
 
     params = resp.dict()