diff --git a/docs/api/enum/WdBuiltinStyle.rst b/docs/api/enum/WdBuiltinStyle.rst
index b7aa682d4..49f10d48c 100644
--- a/docs/api/enum/WdBuiltinStyle.rst
+++ b/docs/api/enum/WdBuiltinStyle.rst
@@ -10,11 +10,14 @@ Specifies a built-in Microsoft Word style.
 Example::
 
     from docx import Document
-    from docx.enum.style import WD_STYLE
 
     document = Document()
     styles = document.styles
-    style = styles[WD_STYLE.BODY_TEXT]
+    style = styles["Body Text"]
+
+A built-in style must be defined in the document before it can be looked up.
+Style lookup uses the style's English UI name, e.g. ``"Body Text"``; a
+``WD_STYLE`` member like ``WD_STYLE.BODY_TEXT`` is not a style lookup key.
 
 ----
 
diff --git a/src/docx/enum/style.py b/src/docx/enum/style.py
index d2474611d..44885d930 100644
--- a/src/docx/enum/style.py
+++ b/src/docx/enum/style.py
@@ -11,12 +11,15 @@ class WD_BUILTIN_STYLE(BaseEnum):
     Example::
 
         from docx import Document
-        from docx.enum.style import WD_STYLE
 
         document = Document()
         styles = document.styles
-        style = styles[WD_STYLE.BODY_TEXT]
+        style = styles["Body Text"]
 
+    A built-in style must be defined in the document before it can be looked
+    up. Style lookup uses the style's English UI name, e.g. ``"Body Text"``;
+    a ``WD_STYLE`` member like ``WD_STYLE.BODY_TEXT`` is not a style lookup
+    key.
 
     MS API name: `WdBuiltinStyle`