diff --git a/ios/SingBoxPacketTunnel/SingBox/ExtensionPlatformInterface.swift b/ios/SingBoxPacketTunnel/SingBox/ExtensionPlatformInterface.swift
index d13234c1..ff8f68cd 100644
--- a/ios/SingBoxPacketTunnel/SingBox/ExtensionPlatformInterface.swift
+++ b/ios/SingBoxPacketTunnel/SingBox/ExtensionPlatformInterface.swift
@@ -222,10 +222,10 @@ public class ExtensionPlatformInterface: NSObject, LibboxPlatformInterfaceProtoc
         }
     }
 
-    public func postServiceClose() async {
+    public func postServiceClose() {
         // TODO
     }
-    
+
     func reset() {
         networkSettings = nil
     }