diff --git a/options.go b/options.go
index 2906586..933b11d 100644
--- a/options.go
+++ b/options.go
@@ -61,18 +61,21 @@ func WithWriter(s io.Writer) Option {
 	})
 }
 
+// WithDefaultLevel set the log level used for request with status code < 400
 func WithDefaultLevel(lvl zerolog.Level) Option {
 	return optionFunc(func(c *config) {
 		c.defaultLevel = lvl
 	})
 }
 
+// WithClientErrorLevel set the log level used for request with status code between 400 and 499
 func WithClientErrorLevel(lvl zerolog.Level) Option {
 	return optionFunc(func(c *config) {
 		c.clientErrorLevel = lvl
 	})
 }
 
+// WithServerErrorLevel set the log level used for request with status code >= 500
 func WithServerErrorLevel(lvl zerolog.Level) Option {
 	return optionFunc(func(c *config) {
 		c.serverErrorLevel = lvl