diff --git a/jupyterlab/coreconfig.py b/jupyterlab/coreconfig.py
index af08f6cdd45b..5268cd36e522 100644
--- a/jupyterlab/coreconfig.py
+++ b/jupyterlab/coreconfig.py
@@ -33,7 +33,7 @@ def _only_nonlab(collection):
 
     This is useful to take the default values of e.g. singletons and filter
     away the '@jupyterlab/' namespace packages, but leave any others (e.g.
-    phosphor and react).
+    lumino and react).
     """
     if isinstance(collection, dict):
         return dict(
diff --git a/jupyterlab/tests/test_app.py b/jupyterlab/tests/test_app.py
index 1912c2ec5129..ec42c90680b0 100644
--- a/jupyterlab/tests/test_app.py
+++ b/jupyterlab/tests/test_app.py
@@ -312,7 +312,7 @@ def get_command(self):
         with open(karma_inject_file, 'w') as fid:
             fid.write("""
             require('es6-promise/dist/es6-promise.js');
-            require('@phosphor/widgets/style/index.css');
+            require('@lumino/widgets/style/index.css');
 
             var node = document.createElement('script');
             node.id = 'jupyter-config-data';