diff --git a/Example/DetailViewController.swift b/Example/DetailViewController.swift
index 53a958b09..04a36487c 100644
--- a/Example/DetailViewController.swift
+++ b/Example/DetailViewController.swift
@@ -104,14 +104,14 @@ class DetailViewController: UITableViewController {
             let field = self.headers.keys.array.sorted(<)[indexPath.row]
             let value = self.headers[field]
 
-            cell.textLabel.text = field
+            cell.textLabel?.text = field
             cell.detailTextLabel!.text = value
 
             return cell
         case .Body:
             let cell = self.tableView.dequeueReusableCellWithIdentifier("Body") as UITableViewCell
 
-            cell.textLabel.text = self.body
+            cell.textLabel?.text = self.body
 
             return cell
         }
diff --git a/README.md b/README.md
index 814a25989..b56b74fb9 100644
--- a/README.md
+++ b/README.md
@@ -498,7 +498,7 @@ Generics can be used to provide automatic, type-safe response object serializati
 
 ```swift
 @objc public protocol ResponseObjectSerializable {
-    init(response: NSHTTPURLResponse, representation: AnyObject)
+    init?(response: NSHTTPURLResponse, representation: AnyObject)
 }
 
 extension Alamofire.Request {
@@ -514,7 +514,7 @@ extension Alamofire.Request {
         }
 
         return response(serializer: serializer, completionHandler: { (request, response, object, error) in
-            completionHandler(request, response, object as? T, error)
+            completionHandler(request, response, object, error)
         })
     }
 }
@@ -525,7 +525,7 @@ final class User: ResponseObjectSerializable {
     let username: String
     let name: String
 
-    required init(response: NSHTTPURLResponse, representation: AnyObject) {
+    required init?(response: NSHTTPURLResponse, representation: AnyObject) {
         self.username = response.URL!.lastPathComponent
         self.name = representation.valueForKeyPath("name") as String
     }
diff --git a/Source/Alamofire.swift b/Source/Alamofire.swift
index 07d0c5b82..161b7d7ba 100644
--- a/Source/Alamofire.swift
+++ b/Source/Alamofire.swift
@@ -1257,27 +1257,31 @@ extension Request: DebugPrintable {
         if let cookieStorage = session.configuration.HTTPCookieStorage {
             if let cookies = cookieStorage.cookiesForURL(URL) as? [NSHTTPCookie] {
                 if !cookies.isEmpty {
-                    let string = cookies.reduce(""){ $0 + "\($1.name)=\($1.value);" }
+                    let string = cookies.reduce(""){ $0 + "\($1.name)=\($1.value ?? String());" }
                     components.append("-b \"\(string.substringToIndex(string.endIndex.predecessor()))\"")
                 }
             }
         }
 
-        for (field, value) in request.allHTTPHeaderFields! {
-            switch field {
-            case "Cookie":
-                continue
-            default:
-                components.append("-H \"\(field): \(value)\"")
+        if request.allHTTPHeaderFields != nil {
+            for (field, value) in request.allHTTPHeaderFields! {
+                switch field {
+                case "Cookie":
+                    continue
+                default:
+                    components.append("-H \"\(field): \(value)\"")
+                }
             }
         }
 
-        for (field, value) in session.configuration.HTTPAdditionalHeaders! {
-            switch field {
-            case "Cookie":
-                continue
-            default:
-                components.append("-H \"\(field): \(value)\"")
+        if session.configuration.HTTPAdditionalHeaders != nil {
+            for (field, value) in session.configuration.HTTPAdditionalHeaders! {
+                switch field {
+                case "Cookie":
+                    continue
+                default:
+                    components.append("-H \"\(field): \(value)\"")
+                }
             }
         }
         
diff --git a/Tests/DownloadTests.swift b/Tests/DownloadTests.swift
index 4bde100ec..632294456 100644
--- a/Tests/DownloadTests.swift
+++ b/Tests/DownloadTests.swift
@@ -68,7 +68,7 @@ class AlamofireDownloadResponseTestCase: XCTestCase {
                 XCTAssertEqual(filteredContents.count, 1, "should have one file in Documents")
 
                 let file = filteredContents.first as NSURL
-                XCTAssertEqual(file.lastPathComponent, "\(numberOfLines)", "filename should be \(numberOfLines)")
+                XCTAssertEqual(file.lastPathComponent!, "\(numberOfLines)", "filename should be \(numberOfLines)")
 
                 if let data = NSData(contentsOfURL: file) {
                     XCTAssertGreaterThan(data.length, 0, "data length should be non-zero")
diff --git a/Tests/RequestTests.swift b/Tests/RequestTests.swift
index 9bf6ecc7a..0d9a7d7f4 100644
--- a/Tests/RequestTests.swift
+++ b/Tests/RequestTests.swift
@@ -127,4 +127,28 @@ class AlamofireRequestDebugDescriptionTestCase: XCTestCase {
         XCTAssert(request.debugDescription.rangeOfString("-d \"{\\\"foo\\\":\\\"bar\\\"}\"") != nil)
         XCTAssert(components.last! == "\"\(URL)\"", "URL component should be equal")
     }
+
+    func testPOSTRequestWithCookieDebugDescription() {
+        let URL = "http://httpbin.org/post"
+
+        let configuration = NSURLSessionConfiguration.defaultSessionConfiguration()
+
+        let properties = [
+            NSHTTPCookieDomain: "httpbin.org",
+            NSHTTPCookiePath: "/post",
+            NSHTTPCookieName: "foo",
+            NSHTTPCookieValue: "bar",
+        ]
+        let cookie = NSHTTPCookie(properties: properties)!
+        configuration.HTTPCookieStorage?.setCookie(cookie)
+
+        let manager = Alamofire.Manager(configuration: configuration)
+        let request = manager.request(.POST, URL)
+        let components = cURLCommandComponents(request)
+
+        XCTAssert(components[0..<3] == ["$", "curl", "-i"], "components should be equal")
+        XCTAssert(components[3..<5] == ["-X", "POST"], "command should contain explicit -X flag")
+        XCTAssert(components[5..<7] == ["-b", "\"foo=bar\""], "command should contain -b flag")
+        XCTAssert(components.last! == "\"\(URL)\"", "URL component should be equal")
+    }
 }