diff --git a/Sources/Enums/RequestError.swift b/Sources/Enums/RequestError.swift
index d6e3ab30..2a1c4147 100644
--- a/Sources/Enums/RequestError.swift
+++ b/Sources/Enums/RequestError.swift
@@ -33,7 +33,7 @@ public enum RequestError: Error {
 
     case noConnection
     case network(error: Error, response: Data?)
-    case invalidResponse(error: AFError, response: Data)
+    case invalidResponse(error: AFError, response: Data?)
     case mapping(error: Error, response: Data)
 
 }
diff --git a/Sources/Extensions/Alamofire/SessionManager+Extensions.swift b/Sources/Extensions/Alamofire/SessionManager+Extensions.swift
index 19929907..9dc40f49 100644
--- a/Sources/Extensions/Alamofire/SessionManager+Extensions.swift
+++ b/Sources/Extensions/Alamofire/SessionManager+Extensions.swift
@@ -79,11 +79,11 @@ public extension Reactive where Base: SessionManager {
 
 private extension ObservableType {
     func catchErrorAndWrap(with request: DataRequest? = nil) -> Observable<E> {
-        return catchError {
+        return catchError { error in
             let resultError: RequestError
             let response = request?.delegate.data
 
-            switch $0 {
+            switch error {
             case let requestError as RequestError:
                 resultError = requestError
             case let urlError as URLError:
@@ -96,12 +96,12 @@ private extension ObservableType {
             case let afError as AFError:
                 switch afError {
                 case .responseSerializationFailed, .responseValidationFailed:
-                    resultError = .invalidResponse(error: afError, response: response ?? Data())
+                    resultError = .invalidResponse(error: afError, response: response)
                 default:
                     resultError = .network(error: afError, response: response)
                 }
             default:
-                resultError = .network(error: $0, response: response)
+                resultError = .network(error: error, response: response)
             }
 
             throw resultError