diff --git a/website/docs/api/vocab.mdx b/website/docs/api/vocab.mdx
index 625841823..3739209d6 100644
--- a/website/docs/api/vocab.mdx
+++ b/website/docs/api/vocab.mdx
@@ -12,8 +12,8 @@ between `Doc` objects.
 
 <Infobox variant="warning">
 
-Please note that the `Vocab` size is not static and increases as texts are
-processed and new tokens are seen.
+Please note that `Vocab` instances are not static. It increases in size as 
+texts with new tokens are processed.
 
 </Infobox>