diff --git a/templates/grimmory/docker-compose.yml b/templates/grimmory/docker-compose.yml
index 686e61f..dbbcc7f 100644
--- a/templates/grimmory/docker-compose.yml
+++ b/templates/grimmory/docker-compose.yml
@@ -26,7 +26,9 @@ services:
       - DATABASE_URL=jdbc:mariadb://grimmory-db:3306/grimmory
       - DATABASE_USERNAME=grimmory
       - DATABASE_PASSWORD=${DB_PASSWORD}
-      - SWAGGER_ENABLED=false
+      # R-798: the API docs stay off. v3.5.0 reads API_DOCS_ENABLED (application.yaml: ${API_DOCS_ENABLED:false}); the
+      # SWAGGER_ENABLED the template used to set is read by nothing. Explicit, so a changed upstream default cannot open it.
+      - API_DOCS_ENABLED=false
       - FORCE_DISABLE_OIDC=true
     volumes:
       - ${HDD_PATH}/appdata/grimmory/data:/app/data