diff --git a/website/api/cli.jade b/website/api/cli.jade
index b0913e60c..cb98ec279 100644
--- a/website/api/cli.jade
+++ b/website/api/cli.jade
@@ -257,7 +257,7 @@ p
     +row
         +cell #[code dev_data]
         +cell positional
-        +cell Location of JSON-formatted dev data (optional).
+        +cell Location of JSON-formatted development data for evaluation.
 
     +row
         +cell #[code --n-iter], #[code -n]