diff --git a/reflectx/reflect.go b/reflectx/reflect.go
index 0b109942..23f65c57 100644
--- a/reflectx/reflect.go
+++ b/reflectx/reflect.go
@@ -187,7 +187,7 @@ func (m *Mapper) TraversalsByNameFunc(t reflect.Type, names []string, fn func(in
 	mustBe(t, reflect.Struct)
 	tm := m.TypeMap(t)
 	for i, name := range names {
-		fi, ok := tm.Names[name]
+		fi, ok := tm.Names[strings.ToLower(name)]
 		if !ok {
 			if err := fn(i, nil); err != nil {
 				return err