diff --git a/lib/layouts/tufte-book.layout b/lib/layouts/tufte-book.layout
index 5767f27efc..722db36c53 100644
--- a/lib/layouts/tufte-book.layout
+++ b/lib/layouts/tufte-book.layout
@@ -45,7 +45,7 @@ NoStyle Subparagraph*
 Style Chapter
 	Margin		Static
 	Category	Section
-	LabelType	None
+	LabelType	No_Label
 	LabelCounter	chapter
 	TocLevel	0
 	LatexType	Command
@@ -68,7 +68,7 @@ End
 Style Section
 	Category	Section
 	Margin		Dynamic
-	LabelType	None
+	LabelType	No_Label
 	LabelCounter	section
 	TocLevel	1
 	LatexType	Command