--- a/layout/style/nsStyleConsts.h
+++ b/layout/style/nsStyleConsts.h
@@ -150,18 +150,18 @@ enum class StyleShapeOutsideShapeBox : u
   Content,
   Padding,
   Border,
   Margin
 };
 
 // <shape-radius> for <basic-shape>
 enum class StyleShapeRadius : uint8_t {
+  ClosestSide,
   FarthestSide,
-  ClosestSide
 };
 
 // Shape source type
 enum class StyleShapeSourceType : uint8_t {
   None,
   URL,
   Shape,
   Box,