diff --git a/user-auth.test.mjs b/user-auth.test.mjs
index b626543..40f597f 100644
--- a/user-auth.test.mjs
+++ b/user-auth.test.mjs
@@ -402,6 +402,7 @@ test('agent session policy preserves sandbox root and exposes workspace ref meta
       GOOSED_SANDBOX_PUBLISH_ROOT: '/srv/goosed-mindspace',
       GOOSED_MCP_NODE_PATH: '/usr/local/bin/node',
       GOOSED_MCP_SERVER_PATH: '/opt/portal/mindspace-sandbox-mcp.mjs',
+      GOOSED_MCP_CONTAINERIZED: '1',
       MINDSPACE_USERDATA_BACKEND: 'postgres',
       MINDSPACE_USERDATA_PG_URL: 'postgresql://mindspace:secret@127.0.0.1:5433/mindspace_userdata_prod',
       MINDSPACE_USERDATA_AUTO_PROVISION: '1',