diff --git a/frontend/ui-tests/tests/ui.test.ts-snapshots/environment-dialog-linux.png b/frontend/ui-tests/tests/ui.test.ts-snapshots/environment-dialog-linux.png
index 4a2e3b0..a4344db 100644
Binary files a/frontend/ui-tests/tests/ui.test.ts-snapshots/environment-dialog-linux.png and b/frontend/ui-tests/tests/ui.test.ts-snapshots/environment-dialog-linux.png differ
diff --git a/jupyterhub_config.py b/jupyterhub_config.py
index 6d92bbb..8502436 100644
--- a/jupyterhub_config.py
+++ b/jupyterhub_config.py
@@ -11,10 +11,11 @@
 
 c.JupyterHub.services = []
 
-# set default limits in the TLJH config in memory
 tljh_config = load_config()
-tljh_config["limits"]["memory"] = "2G"
-tljh_config["limits"]["cpu"] = 2
+
+# set default limits in the TLJH config in memory
+# tljh_config["limits"]["memory"] = "2G"
+# tljh_config["limits"]["cpu"] = 2
 
 # set CPU and memory based on machine profiles
 tljh_config["limits"]["machine_profiles"] = [
diff --git a/tljh_repo2docker/tests/test_images.py b/tljh_repo2docker/tests/test_images.py
index 5ea49a6..ab6617a 100644
--- a/tljh_repo2docker/tests/test_images.py
+++ b/tljh_repo2docker/tests/test_images.py
@@ -10,7 +10,7 @@ async def test_images_list_admin(app):
     cookies = await app.login_user('admin')
     r = await get_page('environments', app, cookies=cookies, allow_redirects=False)
     r.raise_for_status()
-    assert '{"images": [], "default_mem_limit": "None", "default_cpu_limit":"None"}' in r.text
+    assert '{"images": [], "default_mem_limit": "None", "default_cpu_limit":"None", "machine_profiles":[]}' in r.text
 
 
 @pytest.mark.asyncio