diff --git a/cmd/geth/config.go b/cmd/geth/config.go
index c77c04c25..6fc75363c 100644
--- a/cmd/geth/config.go
+++ b/cmd/geth/config.go
@@ -30,7 +30,6 @@ import (
 	"github.com/ethereum/go-ethereum/cmd/utils"
 	"github.com/ethereum/go-ethereum/eth/ethconfig"
 	"github.com/ethereum/go-ethereum/internal/ethapi"
-	"github.com/ethereum/go-ethereum/log"
 	"github.com/ethereum/go-ethereum/metrics"
 	"github.com/ethereum/go-ethereum/node"
 	"github.com/ethereum/go-ethereum/params"
@@ -43,7 +42,7 @@ var (
 		Name:        "dumpconfig",
 		Usage:       "Show configuration values",
 		ArgsUsage:   "",
-		Flags:       append(append(nodeFlags, rpcFlags...), whisperFlags...),
+		Flags:       append(nodeFlags, rpcFlags...),
 		Category:    "MISCELLANEOUS COMMANDS",
 		Description: `The dumpconfig command shows configuration values.`,
 	}
@@ -75,19 +74,8 @@ type ethstatsConfig struct {
 	URL string `toml:",omitempty"`
 }
 
-// whisper has been deprecated, but clients out there might still have [Shh]
-// in their config, which will crash. Cut them some slack by keeping the
-// config, and displaying a message that those config switches are ineffectual.
-// To be removed circa Q1 2021 -- @gballet.
-type whisperDeprecatedConfig struct {
-	MaxMessageSize                        uint32  `toml:",omitempty"`
-	MinimumAcceptedPOW                    float64 `toml:",omitempty"`
-	RestrictConnectionBetweenLightClients bool    `toml:",omitempty"`
-}
-
 type gethConfig struct {
 	Eth      ethconfig.Config
-	Shh      whisperDeprecatedConfig
 	Node     node.Config
 	Ethstats ethstatsConfig
 	Metrics  metrics.Config
@@ -132,11 +120,8 @@ func makeConfigNode(ctx *cli.Context) (*node.Node, gethConfig) {
 		if err := loadConfig(file, &cfg); err != nil {
 			utils.Fatalf("%v", err)
 		}
-
-		if cfg.Shh != (whisperDeprecatedConfig{}) {
-			log.Warn("Deprecated whisper config detected. Whisper has been moved to github.com/ethereum/whisper")
-		}
 	}
+
 	// Apply flags.
 	utils.SetNodeConfig(ctx, &cfg.Node)
 	stack, err := node.New(&cfg.Node)
@@ -147,22 +132,11 @@ func makeConfigNode(ctx *cli.Context) (*node.Node, gethConfig) {
 	if ctx.GlobalIsSet(utils.EthStatsURLFlag.Name) {
 		cfg.Ethstats.URL = ctx.GlobalString(utils.EthStatsURLFlag.Name)
 	}
-	utils.SetShhConfig(ctx, stack)
-
 	applyMetricConfig(ctx, &cfg)
 
 	return stack, cfg
 }
 
-// enableWhisper returns true in case one of the whisper flags is set.
-func checkWhisper(ctx *cli.Context) {
-	for _, flag := range whisperFlags {
-		if ctx.GlobalIsSet(flag.GetName()) {
-			log.Warn("deprecated whisper flag detected. Whisper has been moved to github.com/ethereum/whisper")
-		}
-	}
-}
-
 // makeFullNode loads geth configuration and creates the Ethereum backend.
 func makeFullNode(ctx *cli.Context) (*node.Node, ethapi.Backend) {
 	stack, cfg := makeConfigNode(ctx)
@@ -171,7 +145,6 @@ func makeFullNode(ctx *cli.Context) (*node.Node, ethapi.Backend) {
 	}
 	backend := utils.RegisterEthService(stack, &cfg.Eth)
 
-	checkWhisper(ctx)
 	// Configure GraphQL if requested
 	if ctx.GlobalIsSet(utils.GraphQLEnabledFlag.Name) {
 		utils.RegisterGraphQLService(stack, backend, cfg.Node)
diff --git a/cmd/geth/consolecmd.go b/cmd/geth/consolecmd.go
index e26481003..9d8794eb1 100644
--- a/cmd/geth/consolecmd.go
+++ b/cmd/geth/consolecmd.go
@@ -36,7 +36,7 @@ var (
 		Action:   utils.MigrateFlags(localConsole),
 		Name:     "console",
 		Usage:    "Start an interactive JavaScript environment",
-		Flags:    append(append(append(nodeFlags, rpcFlags...), consoleFlags...), whisperFlags...),
+		Flags:    append(append(nodeFlags, rpcFlags...), consoleFlags...),
 		Category: "CONSOLE COMMANDS",
 		Description: `
 The Geth console is an interactive shell for the JavaScript runtime environment
diff --git a/cmd/geth/main.go b/cmd/geth/main.go
index 9afa03158..207c93c0d 100644
--- a/cmd/geth/main.go
+++ b/cmd/geth/main.go
@@ -186,13 +186,6 @@ var (
 		utils.AllowUnprotectedTxs,
 	}
 
-	whisperFlags = []cli.Flag{
-		utils.WhisperEnabledFlag,
-		utils.WhisperMaxMessageSizeFlag,
-		utils.WhisperMinPOWFlag,
-		utils.WhisperRestrictConnectionBetweenLightClientsFlag,
-	}
-
 	metricsFlags = []cli.Flag{
 		utils.MetricsEnabledFlag,
 		utils.MetricsEnabledExpensiveFlag,
@@ -251,7 +244,6 @@ func init() {
 	app.Flags = append(app.Flags, rpcFlags...)
 	app.Flags = append(app.Flags, consoleFlags...)
 	app.Flags = append(app.Flags, debug.Flags...)
-	app.Flags = append(app.Flags, whisperFlags...)
 	app.Flags = append(app.Flags, metricsFlags...)
 
 	app.Before = func(ctx *cli.Context) error {
diff --git a/cmd/geth/usage.go b/cmd/geth/usage.go
index 2c3cdf194..daea0afc4 100644
--- a/cmd/geth/usage.go
+++ b/cmd/geth/usage.go
@@ -216,10 +216,6 @@ var AppHelpFlagGroups = []flags.FlagGroup{
 		Name:  "METRICS AND STATS",
 		Flags: metricsFlags,
 	},
-	{
-		Name:  "WHISPER (deprecated)",
-		Flags: whisperFlags,
-	},
 	{
 		Name: "ALIASED (deprecated)",
 		Flags: []cli.Flag{
diff --git a/cmd/utils/flags.go b/cmd/utils/flags.go
index 7bbca4265..fc479f398 100644
--- a/cmd/utils/flags.go
+++ b/cmd/utils/flags.go
@@ -680,24 +680,6 @@ var (
 		Usage: "Maximum gas price will be recommended by gpo",
 		Value: ethconfig.Defaults.GPO.MaxPrice.Int64(),
 	}
-	WhisperEnabledFlag = cli.BoolFlag{
-		Name:  "shh",
-		Usage: "Enable Whisper",
-	}
-	WhisperMaxMessageSizeFlag = cli.IntFlag{
-		Name:  "shh.maxmessagesize",
-		Usage: "Max message size accepted",
-		Value: 1024 * 1024,
-	}
-	WhisperMinPOWFlag = cli.Float64Flag{
-		Name:  "shh.pow",
-		Usage: "Minimum POW accepted",
-		Value: 0.2,
-	}
-	WhisperRestrictConnectionBetweenLightClientsFlag = cli.BoolFlag{
-		Name:  "shh.restrict-light",
-		Usage: "Restrict connection between two whisper light clients",
-	}
 
 	// Metrics flags
 	MetricsEnabledFlag = cli.BoolFlag{
@@ -1461,16 +1443,6 @@ func CheckExclusive(ctx *cli.Context, args ...interface{}) {
 	}
 }
 
-// SetShhConfig applies shh-related command line flags to the config.
-func SetShhConfig(ctx *cli.Context, stack *node.Node) {
-	if ctx.GlobalIsSet(WhisperEnabledFlag.Name) ||
-		ctx.GlobalIsSet(WhisperMaxMessageSizeFlag.Name) ||
-		ctx.GlobalIsSet(WhisperMinPOWFlag.Name) ||
-		ctx.GlobalIsSet(WhisperRestrictConnectionBetweenLightClientsFlag.Name) {
-		log.Warn("Whisper support has been deprecated and the code has been moved to github.com/ethereum/whisper")
-	}
-}
-
 // SetEthConfig applies eth-related command line flags to the config.
 func SetEthConfig(ctx *cli.Context, stack *node.Node, cfg *ethconfig.Config) {
 	// Avoid conflicting network flags