diff --git a/example/shirtsize_jsonenums.go b/example/shirtsize_jsonenums.go
index af60b7e..d50c71a 100644
--- a/example/shirtsize_jsonenums.go
+++ b/example/shirtsize_jsonenums.go
@@ -41,6 +41,7 @@ func init() {
 	}
 }
 
+// MarshalJSON is generated so ShirtSize satisfies json.Marshaler.
 func (r ShirtSize) MarshalJSON() ([]byte, error) {
 	if s, ok := interface{}(r).(fmt.Stringer); ok {
 		return json.Marshal(s.String())
@@ -52,6 +53,7 @@ func (r ShirtSize) MarshalJSON() ([]byte, error) {
 	return json.Marshal(s)
 }
 
+// UnmarshalJSON is generated so ShirtSize satisfies json.Unmarshaler.
 func (r *ShirtSize) UnmarshalJSON(data []byte) error {
 	var s string
 	if err := json.Unmarshal(data, &s); err != nil {
diff --git a/example/weekday_jsonenums.go b/example/weekday_jsonenums.go
index c24d250..a97dd11 100644
--- a/example/weekday_jsonenums.go
+++ b/example/weekday_jsonenums.go
@@ -44,6 +44,7 @@ func init() {
 	}
 }
 
+// MarshalJSON is generated so WeekDay satisfies json.Marshaler.
 func (r WeekDay) MarshalJSON() ([]byte, error) {
 	if s, ok := interface{}(r).(fmt.Stringer); ok {
 		return json.Marshal(s.String())
@@ -55,6 +56,7 @@ func (r WeekDay) MarshalJSON() ([]byte, error) {
 	return json.Marshal(s)
 }
 
+// UnmarshalJSON is generated so WeekDay satisfies json.Unmarshaler.
 func (r *WeekDay) UnmarshalJSON(data []byte) error {
 	var s string
 	if err := json.Unmarshal(data, &s); err != nil {