diff --git a/ios/Classes/MapView/AppleMapController.swift b/ios/Classes/MapView/AppleMapController.swift
index 85e7a98..c86d68c 100644
--- a/ios/Classes/MapView/AppleMapController.swift
+++ b/ios/Classes/MapView/AppleMapController.swift
@@ -58,8 +58,13 @@ public class AppleMapController: NSObject, FlutterPlatformView {
         return contentView
     }
     
+    deinit {
+        channel.setMethodCallHandler(nil)
+    }
+    
     private func setMethodCallHandlers() {
-        channel.setMethodCallHandler({ [unowned self] (call: FlutterMethodCall, result: @escaping FlutterResult) -> Void in
+        channel.setMethodCallHandler({ [weak self] (call: FlutterMethodCall, result: @escaping FlutterResult) -> Void in
+            guard let self = self else { return }
             if let args: Dictionary<String, Any> = call.arguments as? Dictionary<String,Any> {
                 switch(call.method) {
                 case "annotations#update":