diff --git a/cmd/migration-tool/migration_035_and_older.go b/cmd/migration-tool/migration_035_and_older.go
index ea3f327..33d9723 100644
--- a/cmd/migration-tool/migration_035_and_older.go
+++ b/cmd/migration-tool/migration_035_and_older.go
@@ -106,10 +106,6 @@ func (u *migrationTool) Migrate() error {
 		return err
 	}
 
-	if err := migrateServerSection(legacyConfigFile, newConfigFile); err != nil {
-		return err
-	}
-
 	_logger.Info("Saving new config ...")
 	return newConfigFile.WriteConfig()
 }
@@ -143,12 +139,3 @@ func migrateAppSection(legacyConfigFile *ini.File, newConfigFile *viper.Viper) e
 
 	return nil
 }
-
-func migrateServerSection(legacyConfigFile *ini.File, newConfigFile *viper.Viper) error {
-	if httpPort, err := legacyConfigFile.Section("server").GetKey("HttpPort"); err == nil {
-		_logger.Info("[server] HttpPort = %s", httpPort.Value())
-		newConfigFile.Set(common.ConfigKeyGatewayPort, httpPort.Value())
-	}
-
-	return nil
-}
diff --git a/common/config.go b/common/config.go
index 9b124f2..c46c6de 100644
--- a/common/config.go
+++ b/common/config.go
@@ -15,8 +15,6 @@ const (
 	ConfigKeyGatewayPort = "gateway.Port"
 	ConfigKeyWWWPath     = "gateway.WWWPath"
 	ConfigKeyRuntimePath = "common.RuntimePath"
-
-	DefaultGatewayPort = "80"
 )
 
 func LoadConfig() (*viper.Viper, error) {
@@ -26,7 +24,6 @@ func LoadConfig() (*viper.Viper, error) {
 	config.SetDefault(ConfigKeyLogSaveName, "gateway")
 	config.SetDefault(ConfigKeyLogFileExt, "log")
 
-	config.SetDefault(ConfigKeyGatewayPort, DefaultGatewayPort)
 	config.SetDefault(ConfigKeyWWWPath, "/var/lib/casaos/www")
 	config.SetDefault(ConfigKeyRuntimePath, "/var/run/casaos") // See https://refspecs.linuxfoundation.org/FHS_3.0/fhs/ch05s13.html