diff --git a/crates/shadowsocks-service/src/config.rs b/crates/shadowsocks-service/src/config.rs
index 2b88ffa7488b..7db2de114483 100644
--- a/crates/shadowsocks-service/src/config.rs
+++ b/crates/shadowsocks-service/src/config.rs
@@ -70,7 +70,14 @@ use serde::{Deserialize, Serialize};
 use shadowsocks::relay::socks5::Address;
 use shadowsocks::{
     config::{
-        ManagerAddr, Mode, ReplayAttackPolicy, ServerAddr, ServerConfig, ServerSource, ServerUser, ServerUserManager,
+        ManagerAddr,
+        Mode,
+        ReplayAttackPolicy,
+        ServerAddr,
+        ServerConfig,
+        ServerSource,
+        ServerUser,
+        ServerUserManager,
         ServerWeight,
     },
     crypto::CipherKind,
@@ -2551,27 +2558,12 @@ impl Config {
         }
 
         if self.config_type.is_server() && self.server.is_empty() {
-            #[cfg(feature = "local-online-config")]
-            if self.online_config.is_none() {
-                // It's Ok if online_config is not None.
-                // servers could be fetch from online configuration delivery (SIP008)
-                let err = Error::new(
-                    ErrorKind::MissingField,
-                    "missing any valid servers in configuration",
-                    None,
-                );
-                return Err(err);
-            }
-
-            #[cfg(not(feature = "local-online-config"))]
-            {
-                let err = Error::new(
-                    ErrorKind::MissingField,
-                    "missing any valid servers in configuration",
-                    None,
-                );
-                return Err(err);
-            }
+            let err = Error::new(
+                ErrorKind::MissingField,
+                "missing any valid servers in configuration",
+                None,
+            );
+            return Err(err);
         }
 
         if self.config_type.is_manager() && self.manager.is_none() {
diff --git a/src/service/local.rs b/src/service/local.rs
index cf873e14b329..a45664369790 100644
--- a/src/service/local.rs
+++ b/src/service/local.rs
@@ -25,7 +25,12 @@ use shadowsocks_service::shadowsocks::relay::socks5::Address;
 use shadowsocks_service::{
     acl::AccessControl,
     config::{
-        read_variable_field_value, Config, ConfigType, LocalConfig, LocalInstanceConfig, ProtocolType,
+        read_variable_field_value,
+        Config,
+        ConfigType,
+        LocalConfig,
+        LocalInstanceConfig,
+        ProtocolType,
         ServerInstanceConfig,
     },
     local::{loadbalancing::PingBalancer, Server},
@@ -40,7 +45,8 @@ use shadowsocks_service::{
 use crate::logging;
 use crate::{
     config::{Config as ServiceConfig, RuntimeMode},
-    monitor, vparser,
+    monitor,
+    vparser,
 };
 
 #[cfg(feature = "local-dns")]