diff --git a/website/docs/api/cli.md b/website/docs/api/cli.md
index 94bedd889..2f7346491 100644
--- a/website/docs/api/cli.md
+++ b/website/docs/api/cli.md
@@ -372,7 +372,7 @@ $ python -m spacy train [lang] [output_path] [train_path] [dev_path]
 | `--n-iter`, `-n`                                                | option        | Number of iterations (default: `30`).                                                                                                                             |
 | `--n-early-stopping`, `-ne`                                     | option        | Maximum number of training epochs without dev accuracy improvement.                                                                                               |
 | `--n-examples`, `-ns`                                           | option        | Number of examples to use (defaults to `0` for all examples).                                                                                                     |
-| `--use-gpu`, `-g`                                               | option        | Whether to use GPU. Can be either `0`, `1` or `-1`.                                                                                                               |
+| `--use-gpu`, `-g`                                               | option        | GPU ID or `-1` for CPU only (default: `-1`).                                                                                                                      |
 | `--version`, `-V`                                               | option        | Model version. Will be written out to the model's `meta.json` after training.                                                                                     |
 | `--meta-path`, `-m` <Tag variant="new">2</Tag>                  | option        | Optional path to model [`meta.json`](/usage/training#models-generating). All relevant properties like `lang`, `pipeline` and `spacy_version` will be overwritten. |
 | `--init-tok2vec`, `-t2v` <Tag variant="new">2.1</Tag>           | option        | Path to pretrained weights for the token-to-vector parts of the models. See `spacy pretrain`. Experimental.                                                       |