diff --git a/v4/cmd/server.go b/v4/cmd/server.go
index 28ba0c4..411eb13 100644
--- a/v4/cmd/server.go
+++ b/v4/cmd/server.go
@@ -94,11 +94,11 @@ func init() {
 	viper.BindPFlag("db.database", serverCmd.Flags().Lookup("db-database"))
 
 	// db.host
-	serverCmd.Flags().String("db-host", "", "Postgres host (config:'db.host')")
+	serverCmd.Flags().String("db-host", "postgres", "Postgres host (config:'db.host')")
 	viper.BindPFlag("db.host", serverCmd.Flags().Lookup("db-host"))
 
 	// db.password
-	serverCmd.Flags().String("db-password", "", "Postgres password (config:'db.password')")
+	serverCmd.Flags().String("db-password", "bottin", "Postgres password (config:'db.password')")
 	viper.BindPFlag("db.password", serverCmd.Flags().Lookup("db-password"))
 
 	// db.port
@@ -106,6 +106,6 @@ func init() {
 	viper.BindPFlag("db.port", serverCmd.Flags().Lookup("db-port"))
 
 	// db.user
-	serverCmd.Flags().String("db-user", "", "Postgres user (config:'db.user')")
+	serverCmd.Flags().String("db-user", "bottin", "Postgres user (config:'db.user')")
 	viper.BindPFlag("db.user", serverCmd.Flags().Lookup("db-user"))
 }