diff --git a/website/docs/api/cli.md b/website/docs/api/cli.md
index 10ab2083e..c04ae5879 100644
--- a/website/docs/api/cli.md
+++ b/website/docs/api/cli.md
@@ -878,6 +878,9 @@ skew. To render a sample of dependency parses in a HTML file using the
 [displaCy visualizations](/usage/visualizers), set as output directory as the
 `--displacy-path` argument.
 
+The `SPEED` value included in the output is the words per second processed by
+the pipeline.
+
 ```cli
 $ python -m spacy evaluate [model] [data_path] [--output] [--code] [--gold-preproc] [--gpu-id] [--displacy-path] [--displacy-limit]
 ```