diff --git a/README.md b/README.md
index 58dc5fe3..836ac62f 100644
--- a/README.md
+++ b/README.md
@@ -411,7 +411,7 @@ log.Info().Msg("hello world")
 Equivalent of `Lshortfile`:
 
 ```go
-zerolog.CallerMarshalFunc = func(file string, line int) string {
+zerolog.CallerMarshalFunc = func(pc uintptr, file string, line int) string {
     short := file
     for i := len(file) - 1; i > 0; i-- {
         if file[i] == '/' {