diff --git a/whisper/whisperv5/config.go b/whisper/whisperv5/config.go
index a53d504484..af59f1bdc3 100644
--- a/whisper/whisperv5/config.go
+++ b/whisper/whisperv5/config.go
@@ -20,8 +20,6 @@ import (
 	"gopkg.in/urfave/cli.v1"
 )
 
-//go:generate gencodec -type Config -formats toml -out gen_config.go
-
 type Config struct {
 	MaxMessageSize     uint32  `toml:",omitempty"`
 	MinimumAcceptedPOW float64 `toml:",omitempty"`
diff --git a/whisper/whisperv5/gen_config.go b/whisper/whisperv5/gen_config.go
deleted file mode 100644
index 2f10dcdb84..0000000000
--- a/whisper/whisperv5/gen_config.go
+++ /dev/null
@@ -1,32 +0,0 @@
-// Code generated by github.com/fjl/gencodec. DO NOT EDIT.
-
-package whisperv5
-
-func (c Config) MarshalTOML() (interface{}, error) {
-	type Config struct {
-		MaxMessageSize     uint32  `toml:",omitempty"`
-		MinimumAcceptedPOW float64 `toml:",omitempty"`
-	}
-	var enc Config
-	enc.MaxMessageSize = c.MaxMessageSize
-	enc.MinimumAcceptedPOW = c.MinimumAcceptedPOW
-	return &enc, nil
-}
-
-func (c *Config) UnmarshalTOML(unmarshal func(interface{}) error) error {
-	type Config struct {
-		MaxMessageSize     *uint32  `toml:",omitempty"`
-		MinimumAcceptedPOW *float64 `toml:",omitempty"`
-	}
-	var dec Config
-	if err := unmarshal(&dec); err != nil {
-		return err
-	}
-	if dec.MaxMessageSize != nil {
-		c.MaxMessageSize = *dec.MaxMessageSize
-	}
-	if dec.MinimumAcceptedPOW != nil {
-		c.MinimumAcceptedPOW = *dec.MinimumAcceptedPOW
-	}
-	return nil
-}