diff --git a/debian/postinst b/debian/postinst
index 2f8f18e813b..5126df0cf79 100644
--- a/debian/postinst
+++ b/debian/postinst
@@ -13,8 +13,8 @@ case "${1}" in
         if ! getent passwd | grep -q "^odoo:"; then
             adduser --system --home $ODOO_DATA_DIR --quiet --group $ODOO_USER
         fi
-        # Register "$ODOO_USER" as a postgres superuser
-        su - postgres -c "createuser -s $ODOO_USER" 2> /dev/null || true
+        # Register "$ODOO_USER" as a postgres user with "Create DB" role attribute
+        su - postgres -c "createuser -d -R -S $ODOO_USER" 2> /dev/null || true
         # Configuration file
         chown $ODOO_USER:$ODOO_GROUP $ODOO_CONFIGURATION_FILE
         chmod 0640 $ODOO_CONFIGURATION_FILE
diff --git a/setup/redhat/postinstall.sh b/setup/redhat/postinstall.sh
index 04ea928b13a..b9ef1f908e0 100644
--- a/setup/redhat/postinstall.sh
+++ b/setup/redhat/postinstall.sh
@@ -13,8 +13,8 @@ if ! getent passwd | grep -q "^odoo:"; then
     groupadd $ODOO_GROUP
     adduser --system --no-create-home $ODOO_USER -g $ODOO_GROUP
 fi
-# Register "$ODOO_USER" as a postgres superuser
-su - postgres -c "createuser -s $ODOO_USER" 2> /dev/null || true
+# Register "$ODOO_USER" as a postgres user with "Create DB" role attribute
+su - postgres -c "createuser -d -R -S $ODOO_USER" 2> /dev/null || true
 # Configuration file
 mkdir -p $ODOO_CONFIGURATION_DIR
 # can't copy debian config-file as addons_path is not the same