diff --git a/cmd/utils/flags.go b/cmd/utils/flags.go
index bf0c5d33c8..fbb030be9c 100644
--- a/cmd/utils/flags.go
+++ b/cmd/utils/flags.go
@@ -887,6 +887,7 @@ func splitAndTrim(input string) []string {
 // command line flags, returning empty if the HTTP endpoint is disabled.
 func setHTTP(ctx *cli.Context, cfg *node.Config) {
 	if ctx.GlobalBool(LegacyRPCEnabledFlag.Name) && cfg.HTTPHost == "" {
+		log.Warn("The flag --rpc is deprecated and will be removed in the future, please use --http")
 		cfg.HTTPHost = "127.0.0.1"
 		if ctx.GlobalIsSet(LegacyRPCListenAddrFlag.Name) {
 			cfg.HTTPHost = ctx.GlobalString(LegacyRPCListenAddrFlag.Name)
diff --git a/internal/debug/flags.go b/internal/debug/flags.go
index 9e5f8d252f..70c31cf0ef 100644
--- a/internal/debug/flags.go
+++ b/internal/debug/flags.go
@@ -86,26 +86,27 @@ var (
 		Name:  "trace",
 		Usage: "Write execution trace to the given file",
 	}
-	legacyPprofPortFlag = cli.IntFlag{ // (Deprecated April 2020)
+	// (Deprecated April 2020)
+	legacyPprofPortFlag = cli.IntFlag{
 		Name:  "pprofport",
 		Usage: "pprof HTTP server listening port (deprecated, use --pprof.port)",
 		Value: 6060,
 	}
-	legacyPprofAddrFlag = cli.StringFlag{ // (Deprecated April 2020)
+	legacyPprofAddrFlag = cli.StringFlag{
 		Name:  "pprofaddr",
 		Usage: "pprof HTTP server listening interface (deprecated, use --pprof.addr)",
 		Value: "127.0.0.1",
 	}
-	legacyMemprofilerateFlag = cli.IntFlag{ // (Deprecated April 2020)
+	legacyMemprofilerateFlag = cli.IntFlag{
 		Name:  "memprofilerate",
 		Usage: "Turn on memory profiling with the given rate (deprecated, use --pprof.memprofilerate)",
 		Value: runtime.MemProfileRate,
 	}
-	legacyBlockprofilerateFlag = cli.IntFlag{ // (Deprecated April 2020)
+	legacyBlockprofilerateFlag = cli.IntFlag{
 		Name:  "blockprofilerate",
 		Usage: "Turn on block profiling with the given rate (deprecated, use --pprof.blockprofilerate)",
 	}
-	legacyCpuprofileFlag = cli.StringFlag{ // (Deprecated April 2020)
+	legacyCpuprofileFlag = cli.StringFlag{
 		Name:  "cpuprofile",
 		Usage: "Write CPU profile to the given file (deprecated, use --pprof.cpuprofile)",
 	}