diff --git a/Doc/Sda1/prerequisites.xml b/Doc/Sda1/prerequisites.xml
index 8908ad097611aeb13262f2b82c0079a1da568fca..9795605196e701709e5949890b7b1f049c5b61c7 100644
--- a/Doc/Sda1/prerequisites.xml
+++ b/Doc/Sda1/prerequisites.xml
@@ -213,9 +213,16 @@
             linkends="sda1_fig_postgresqlInstallUserPW-1"
             xml:id="sda1_fig_postgresqlInstallUserPW-1-co"/>
 
+#> su - postgres -c "createuser --interactive"
+Enter name of role to add: hdmuser
+Shall the new role be a superuser? (y/n) n
+Shall the new role be allowed to create databases? (y/n) n
+Shall the new role be allowed to create more new roles? (y/n) n
+
 su - postgres -c "PGPASSWORD=XYZ createdb --owner hdmuser hdm" <co
             linkends="sda1_fig_postgresqlInstallUserPW-2"
             xml:id="sda1_fig_postgresqlInstallUserPW-2-co"/>
+alter role hdmuser WITH PASSWORD 'XYZ';
 
 PGPASSWORD=XYZ psql -h localhost --username=hdmuser -d hdm <co
             linkends="sda1_fig_postgresqlInstallUserPW-3"