diff --git a/packages/dom/README.md b/packages/dom/README.md
index 8a2186890d5e49..1212dea1f4f5d5 100644
--- a/packages/dom/README.md
+++ b/packages/dom/README.md
@@ -148,7 +148,7 @@ _Parameters_
 
 _Returns_
 
--   `boolean`: True if at the edge, false if not.
+-   `boolean`: True if at the vertical edge, false if not.
 
 <a name="placeCaretAtHorizontalEdge" href="#placeCaretAtHorizontalEdge">#</a> **placeCaretAtHorizontalEdge**