diff --git a/README.md b/README.md
index 9f712a7..6fa6e20 100644
--- a/README.md
+++ b/README.md
@@ -317,7 +317,7 @@ type MyJSONFormatter struct {
 
 log.SetFormatter(new(MyJSONFormatter))
 
-func (f *JSONFormatter) Format(entry *Entry) ([]byte, error) {
+func (f *MyJSONFormatter) Format(entry *Entry) ([]byte, error) {
   // Note this doesn't include Time, Level and Message which are available on
   // the Entry. Consult `godoc` on information about those fields or read the
   // source of the official loggers.