diff --git a/pkg/ubuntu-18.04_amd64/DEBIAN/postinst b/pkg/ubuntu-18.04_amd64/DEBIAN/postinst
index 7e0f17dd3..17cb8b10a 100755
--- a/pkg/ubuntu-18.04_amd64/DEBIAN/postinst
+++ b/pkg/ubuntu-18.04_amd64/DEBIAN/postinst
@@ -28,9 +28,9 @@ db_key="$(openssl rand -base64 32)"
 
 # Setup DB
 # XXX: Remove || true and detect actual failures
-su postgres -c "psql -c 'CREATE ROLE ${db_user} WITH LOGIN PASSWORD \\'${db_password}\\';' || true"
-su postgres -c "psql -c 'CREATE DATABASE cloudfire;' || true"
-su postgres -c "psql -c 'GRANT ALL PRIVILEGES ON DATABASE cloudfire to ${db_user};' || true"
+su postgres -c "psql -c \"CREATE ROLE ${db_user} WITH LOGIN PASSWORD '${db_password}';\" || true"
+su postgres -c "psql -c \"CREATE DATABASE cloudfire;\" || true"
+su postgres -c "psql -c \"GRANT ALL PRIVILEGES ON DATABASE cloudfire to ${db_user};\" || true"
 
 # Write CloudFire SSL files
 mkdir -p /opt/cloudfire/ssl