diff --git a/nodebuilder/core/flags.go b/nodebuilder/core/flags.go
index ae5018680d..d29c146baf 100644
--- a/nodebuilder/core/flags.go
+++ b/nodebuilder/core/flags.go
@@ -10,6 +10,7 @@ import (
 var (
 	coreIPFlag         = "core.ip"
 	corePortFlag       = "core.port"
+	coreGRPCFlag       = "core.grpc.port"
 	coreTLS            = "core.tls"
 	coreXTokenPathFlag = "core.xtoken.path" //nolint:gosec
 )
@@ -30,6 +31,12 @@ func Flags() *flag.FlagSet {
 		DefaultPort,
 		"Set a custom gRPC port for the core node connection. The --core.ip flag must also be provided.",
 	)
+	flags.String(
+		coreGRPCFlag,
+		"",
+		"Set a custom gRPC port for the core node connection.WARNING: --core.grpc.port is deprecated. "+
+			"Please use --core.port instead",
+	)
 	flags.Bool(
 		coreTLS,
 		false,
@@ -51,6 +58,10 @@ func ParseFlags(
 	cmd *cobra.Command,
 	cfg *Config,
 ) error {
+	if cmd.Flag(coreIPFlag).Changed {
+		return fmt.Errorf("the flag is deprecated. Please use --core.port instead")
+	}
+
 	coreIP := cmd.Flag(coreIPFlag).Value.String()
 	if coreIP == "" {
 		if cmd.Flag(corePortFlag).Changed {