diff --git a/TIFoundationUtils/AsyncOperation/Sources/AsyncOperation+Observe.swift b/TIFoundationUtils/AsyncOperation/Sources/AsyncOperation+Observe.swift
index 3b94c89a..17baac58 100644
--- a/TIFoundationUtils/AsyncOperation/Sources/AsyncOperation+Observe.swift
+++ b/TIFoundationUtils/AsyncOperation/Sources/AsyncOperation+Observe.swift
@@ -22,32 +22,20 @@
 
 import Foundation
 
-class BaseClosureObserverOperation<Output, Failure: Error, ResultClosureType>: DependendAsyncOperation<Output, Failure> {
-    typealias OnResultClosure = ResultClosureType
-
-    let onResult: OnResultClosure?
-
-    init(dependency: AsyncOperation<Output, Failure>,
-         onResult: OnResultClosure? = nil) {
-
-        self.onResult = onResult
-
-        super.init(dependency: dependency) { $0 }
-    }
-}
-
-private final class ClosureObserverOperation<Output, Failure: Error>:
-    BaseClosureObserverOperation<Output, Failure, (Result<Output, Failure>) -> Void> {
+private final class ClosureObserverOperation<Output, Failure: Error>: DependendAsyncOperation<Output, Failure> {
+    typealias OnResultClosure = (Result<Output, Failure>) -> Void
 
+    private let onResult: OnResultClosure?
     private let callbackQueue: DispatchQueue
 
     init(dependency: AsyncOperation<Output, Failure>,
          onResult: OnResultClosure? = nil,
          callbackQueue: DispatchQueue = .main) {
 
+        self.onResult = onResult
         self.callbackQueue = callbackQueue
 
-        super.init(dependency: dependency, onResult: onResult)
+        super.init(dependency: dependency) { $0 }
     }
 
     override func handle(result: Result<Output, Failure>) {
@@ -60,8 +48,18 @@ private final class ClosureObserverOperation<Output, Failure: Error>:
     }
 }
 
-private final class UIClosureObserverOperation<Output, Failure: Error>:
-    BaseClosureObserverOperation<Output, Failure, @MainActor (Result<Output, Failure>) -> Void> {
+private final class UIClosureObserverOperation<Output, Failure: Error>: DependendAsyncOperation<Output, Failure> {
+    typealias OnResultClosure = @MainActor (Result<Output, Failure>) -> Void
+
+    private let onResult: OnResultClosure?
+
+    init(dependency: AsyncOperation<Output, Failure>,
+         onResult: OnResultClosure? = nil) {
+
+        self.onResult = onResult
+
+        super.init(dependency: dependency) { $0 }
+    }
 
     override func handle(result: Result<Output, Failure>) {
         self.result = result