diff --git a/postgres-appliance/scripts/configure_spilo.py b/postgres-appliance/scripts/configure_spilo.py
index 783020f2c..176b934eb 100755
--- a/postgres-appliance/scripts/configure_spilo.py
+++ b/postgres-appliance/scripts/configure_spilo.py
@@ -260,7 +260,7 @@ def deep_update(a, b):
   {{#USE_ADMIN}}
   users:
     {{PGUSER_ADMIN}}:
-      password: {{PGPASSWORD_ADMIN}}
+      password: '{{PGPASSWORD_ADMIN}}'
       options:
         - createrole
         - createdb