diff --git a/create_db.sql b/create_db.sql
index 20a0306..15e4c56 100644
--- a/create_db.sql
+++ b/create_db.sql
@@ -1,7 +1,7 @@
 DROP DATABASE IF EXISTS card_db;
 CREATE DATABASE card_db;
 
---CREATE USER cardapp WITH PASSWORD '***';
+CREATE USER cardapp WITH PASSWORD 'database_password';
 
 \c card_db;
 
diff --git a/docs/CARD.md b/docs/CARD.md
index b14316f..b833a6c 100644
--- a/docs/CARD.md
+++ b/docs/CARD.md
@@ -39,7 +39,7 @@ Here we describe how to create your own bolt card.
 - set `Protocol` to `https://`
 - set `URI Data` to
 ```
-lnurlw://card.yourdomain.com
+lnurlw://card.yourdomain.com/ln
 ```
 - select `Add PICCDATA` and `Enable SUN Message`
 - adjust the `URI Data` to
diff --git a/docs/INSTALL.md b/docs/INSTALL.md
index 3b17841..0fccff7 100644
--- a/docs/INSTALL.md
+++ b/docs/INSTALL.md
@@ -44,7 +44,9 @@ edit `Caddyfile` to set the boltcard domain name
 edit `add_card_data.sql` to set up the individual bolt card records
 
 ### database creation
-`$ ./s_create_db`
+edit `create_db.sql` to set the cardapp password  
+`$ sudo -u postgres createuser -s ubuntu`  
+`$ ./s_create_db`  
 
 ### boltcard service install
 `$ sudo cp boltcard.service /etc/systemd/system/boltcard.service`