diff --git a/lib/databases/postgresql b/lib/databases/postgresql
index 81989f2..ee24c8b 100644
--- a/lib/databases/postgresql
+++ b/lib/databases/postgresql
@@ -38,8 +38,8 @@
     start_service postgresql
 
     # If creating the role fails, chances are it already existed. Try to alter it.
-    sudo -u postgres -i psql -c "CREATE ROLE $DATABASE_USER WITH SUPERUSER LOGIN PASSWORD '$DATABASE_PASSWORD'" || \
-    sudo -u postgres -i psql -c "ALTER ROLE $DATABASE_USER WITH SUPERUSER LOGIN PASSWORD '$DATABASE_PASSWORD'"
+    sudo -u root sudo -u postgres -i psql -c "CREATE ROLE $DATABASE_USER WITH SUPERUSER LOGIN PASSWORD '$DATABASE_PASSWORD'" || \
+    sudo -u root sudo -u postgres -i psql -c "ALTER ROLE $DATABASE_USER WITH SUPERUSER LOGIN PASSWORD '$DATABASE_PASSWORD'"
 }
 
 function install_database_postgresql {